Proportion Calculator
Smart Proportion Calculator for solving proportions, ratios, and cross multiplication problems quickly with accurate instant results.
Proportion Type
"If A equals B, then C equals X"
0
Direct: As A increases, B increases proportionally.
Calculated Solution
Value of X0
Calculation Formula
X = (20 × 15) / 10
Ratio A:B1 : 2
Percentage Change150%
Step-by-step:
- Identify that A and B have a linear relationship.
- Multiply the new value (C) by the original output (B).
- Divide the result by the original input (A) to find X.
Direct Proportion
Use this for situations where both values increase together (e.g., more items = higher cost). Based on the mathematical Rule of Three for linear scaling.
Inverse Proportion
Perfect for tasks where an increase in one value leads to a decrease in the other (e.g., more workers = less time required). Essential for project management and resource planning.