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Finding the Fourth Proportional to 36,640.68, 50,564.13 and 20,724.78

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Solution

The fourth proportional to 36,640.68, 50,564.13 and 20,724.78 is: 28,600.19

Step by Step Solution

  1. Step 1: Write the proportion equation
    36,640.68 : 50,564.13 = 20,724.78 : x
  2. Step 2: Convert to fraction form
    36,640.68/50,564.13 = 20,724.78/x
  3. Step 3: Cross multiply
    36,640.68x = 50,564.13 × 20,724.78
  4. Step 4: Simplify right side
    36,640.68x = 1,047,930,470.14
  5. Step 5: Solve for x
    x = 1,047,930,470.14/36,640.68
  6. Step 6: Final answer
    x = 28,600.19

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.