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Finding the Fourth Proportional to 29,311.62, 40,449.62 and 15,882.57

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Solution

The fourth proportional to 29,311.62, 40,449.62 and 15,882.57 is: 21,917.72

Step by Step Solution

  1. Step 1: Write the proportion equation
    29,311.62 : 40,449.62 = 15,882.57 : x
  2. Step 2: Convert to fraction form
    29,311.62/40,449.62 = 15,882.57/x
  3. Step 3: Cross multiply
    29,311.62x = 40,449.62 × 15,882.57
  4. Step 4: Simplify right side
    29,311.62x = 642,443,841.71
  5. Step 5: Solve for x
    x = 642,443,841.71/29,311.62
  6. Step 6: Final answer
    x = 21,917.72

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