What it does
Solve a missing value in two equivalent ratios. Enter the values above to see a live estimate. The calculation runs in your browser, and the formula shown beside the result explains the method.
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Math
Proportion Calculator
Solve a missing value in two equivalent ratios.
Result
15
Formula
A ÷ B = C ÷ X → X = B × C ÷ AAbout this calculator
How Proportion Calculator helps
Solve a missing value in two equivalent ratios.
When it is useful
This tool belongs to Math. It is useful when you want a quick, transparent answer before making a practical decision, checking a result or planning the next step.
How to use it
Enter the values that describe your situation, then select Calculate. The result updates in place, and the formula below it shows how the estimate was produced.
A considered estimateThis calculator gives an estimate for general information. Check important decisions with a qualified professional.
How it works
Enter the values above to see a live estimate. The calculation runs in your browser, and the formula shown beside the result explains the method.