WT-018
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CALCULATORS / LOCAL UTILITY
Ratio & Proportion Calculator
Solve ratios and proportions with cross multiplication, reduced ratios, and unit rates.
RATIOS
LOCAL
NO DATA SENT
RATIO / PROPORTION BENCHCROSS MULTIPLY / UNIT RATE / REDUCE
PROPORTIONCHOOSE WHICH VALUE IS X
:
=:
LEFT UNIT RATE—
RIGHT UNIT RATE—
LEFT REDUCED—
RIGHT REDUCED—
STEPSCROSS-MULTIPLICATION WALKTHROUGH
READYSelect the unknown and solve the proportion.
LOCAL TOOL: Ratios and proportions are solved entirely in your browser.
FIELD NOTE / 018
A proportion says two ratios represent the same relationship.
Cross multiplication turns a proportion into a simple equation. The walkthrough shows which values multiply together, how the unknown is isolated, and how each side can be reduced to check that the ratios agree.