Proportion Calculator
Use this proportion calculator to solve a simple missing proportional value.
Proportion Calculator workspace
Solve a simple proportion and show the missing value.
Result will appear here.
Enter the numbers and calculate to see the answer, formula context, and next step.
Formula used
A ÷ B = C ÷ X, so X = B × C ÷ A
This formula is shown so learners can understand the calculation instead of only copying the answer.
Education note
Education calculators on ToolsBing are for learning, planning, and estimation only. They may help students, parents, teachers, and professionals understand calculations, but they do not replace school policies, instructor grading rules, official transcripts, academic advising, or professional instruction.