Cross-multiplication

  • Cross-multiplication is a procedure for calculating direct and indirect proportion.
  • Direct proportion — »the more, the more:« 1 brick weighs 5 kg, how much do 150 bricks weight?
  • Indirect proportion — »the more, the less:« If the car is driven at an average speed of 70 km/h, it will take 40 minutes. How long does it take for an average speed of 90 km/h?

Calculator

Enter 3 values

XX
  • direct proportion
  • indirect proportion

Round to decimal places

Result:

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