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Finding the Fourth Proportional to 10,717.20, 14,793.61 and 8,724.29

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Solution

The fourth proportional to 10,717.20, 14,793.61 and 8,724.29 is: 12,042.68

Step by Step Solution

  1. Step 1: Write the proportion equation
    10,717.20 : 14,793.61 = 8,724.29 : x
  2. Step 2: Convert to fraction form
    10,717.20/14,793.61 = 8,724.29/x
  3. Step 3: Cross multiply
    10,717.20x = 14,793.61 × 8,724.29
  4. Step 4: Simplify right side
    10,717.20x = 129,063,758.96
  5. Step 5: Solve for x
    x = 129,063,758.96/10,717.20
  6. Step 6: Final answer
    x = 12,042.68

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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.