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Finding the Fourth Proportional to 16,375.20, 24,562.80 and 12,688.80

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Solution

The fourth proportional to 16,375.20, 24,562.80 and 12,688.80 is: 19,033.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    16,375.20 : 24,562.80 = 12,688.80 : x
  2. Step 2: Convert to fraction form
    16,375.20/24,562.80 = 12,688.80/x
  3. Step 3: Cross multiply
    16,375.20x = 24,562.80 × 12,688.80
  4. Step 4: Simplify right side
    16,375.20x = 311,672,456.64
  5. Step 5: Solve for x
    x = 311,672,456.64/16,375.20
  6. Step 6: Final answer
    x = 19,033.20

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1.5x scale

Why These Related Problems?

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