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Finding the Fourth Proportional to 16,463.72, 22,719.76 and 8,909.88

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Solution

The fourth proportional to 16,463.72, 22,719.76 and 8,909.88 is: 12,295.54

Step by Step Solution

  1. Step 1: Write the proportion equation
    16,463.72 : 22,719.76 = 8,909.88 : x
  2. Step 2: Convert to fraction form
    16,463.72/22,719.76 = 8,909.88/x
  3. Step 3: Cross multiply
    16,463.72x = 22,719.76 × 8,909.88
  4. Step 4: Simplify right side
    16,463.72x = 202,430,335.23
  5. Step 5: Solve for x
    x = 202,430,335.23/16,463.72
  6. Step 6: Final answer
    x = 12,295.54

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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.