Home / 39,757.20-54,865.36-21,607.92

Finding the Fourth Proportional to 39,757.20, 54,865.36 and 21,607.92

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Solution

The fourth proportional to 39,757.20, 54,865.36 and 21,607.92 is: 29,819.16

Step by Step Solution

  1. Step 1: Write the proportion equation
    39,757.20 : 54,865.36 = 21,607.92 : x
  2. Step 2: Convert to fraction form
    39,757.20/54,865.36 = 21,607.92/x
  3. Step 3: Cross multiply
    39,757.20x = 54,865.36 × 21,607.92
  4. Step 4: Simplify right side
    39,757.20x = 1,185,526,336.66
  5. Step 5: Solve for x
    x = 1,185,526,336.66/39,757.20
  6. Step 6: Final answer
    x = 29,819.16

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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.