Home / 39,308.92-54,247.28-21,404.90

Finding the Fourth Proportional to 39,308.92, 54,247.28 and 21,404.90

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Solution

The fourth proportional to 39,308.92, 54,247.28 and 21,404.90 is: 29,539.29

Step by Step Solution

  1. Step 1: Write the proportion equation
    39,308.92 : 54,247.28 = 21,404.90 : x
  2. Step 2: Convert to fraction form
    39,308.92/54,247.28 = 21,404.90/x
  3. Step 3: Cross multiply
    39,308.92x = 54,247.28 × 21,404.90
  4. Step 4: Simplify right side
    39,308.92x = 1,161,157,632.27
  5. Step 5: Solve for x
    x = 1,161,157,632.27/39,308.92
  6. Step 6: Final answer
    x = 29,539.29

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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.