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Finding the Fourth Proportional to 16,688.20, 25,061.10 and 16,169.80

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Solution

The fourth proportional to 16,688.20, 25,061.10 and 16,169.80 is: 24,282.61

Step by Step Solution

  1. Step 1: Write the proportion equation
    16,688.20 : 25,061.10 = 16,169.80 : x
  2. Step 2: Convert to fraction form
    16,688.20/25,061.10 = 16,169.80/x
  3. Step 3: Cross multiply
    16,688.20x = 25,061.10 × 16,169.80
  4. Step 4: Simplify right side
    16,688.20x = 405,232,974.78
  5. Step 5: Solve for x
    x = 405,232,974.78/16,688.20
  6. Step 6: Final answer
    x = 24,282.61

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