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Finding the Fourth Proportional to 14,871.17, 20,520.79 and 8,902.72

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Solution

The fourth proportional to 14,871.17, 20,520.79 and 8,902.72 is: 12,284.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    14,871.17 : 20,520.79 = 8,902.72 : x
  2. Step 2: Convert to fraction form
    14,871.17/20,520.79 = 8,902.72/x
  3. Step 3: Cross multiply
    14,871.17x = 20,520.79 × 8,902.72
  4. Step 4: Simplify right side
    14,871.17x = 182,690,847.55
  5. Step 5: Solve for x
    x = 182,690,847.55/14,871.17
  6. Step 6: Final answer
    x = 12,284.90

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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.