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Finding the Fourth Proportional to 12,375.42, 18,553.50 and 8,416.32

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Solution

The fourth proportional to 12,375.42, 18,553.50 and 8,416.32 is: 12,617.93

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,375.42 : 18,553.50 = 8,416.32 : x
  2. Step 2: Convert to fraction form
    12,375.42/18,553.50 = 8,416.32/x
  3. Step 3: Cross multiply
    12,375.42x = 18,553.50 × 8,416.32
  4. Step 4: Simplify right side
    12,375.42x = 156,152,193.12
  5. Step 5: Solve for x
    x = 156,152,193.12/12,375.42
  6. Step 6: Final answer
    x = 12,617.93

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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.