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Finding the Fourth Proportional to 22,689.60, 34,034.40 and 15,691.20

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Solution

The fourth proportional to 22,689.60, 34,034.40 and 15,691.20 is: 23,536.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    22,689.60 : 34,034.40 = 15,691.20 : x
  2. Step 2: Convert to fraction form
    22,689.60/34,034.40 = 15,691.20/x
  3. Step 3: Cross multiply
    22,689.60x = 34,034.40 × 15,691.20
  4. Step 4: Simplify right side
    22,689.60x = 534,040,577.28
  5. Step 5: Solve for x
    x = 534,040,577.28/22,689.60
  6. Step 6: Final answer
    x = 23,536.80

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.