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Finding the Fourth Proportional to 29,375.80, 40,538.92 and 15,947.18

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Solution

The fourth proportional to 29,375.80, 40,538.92 and 15,947.18 is: 22,007.28

Step by Step Solution

  1. Step 1: Write the proportion equation
    29,375.80 : 40,538.92 = 15,947.18 : x
  2. Step 2: Convert to fraction form
    29,375.80/40,538.92 = 15,947.18/x
  3. Step 3: Cross multiply
    29,375.80x = 40,538.92 × 15,947.18
  4. Step 4: Simplify right side
    29,375.80x = 646,481,454.25
  5. Step 5: Solve for x
    x = 646,481,454.25/29,375.80
  6. Step 6: Final answer
    x = 22,007.28

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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.