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Finding the Fourth Proportional to 18,755.25, 28,136.67 and 8,367

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Solution

The fourth proportional to 18,755.25, 28,136.67 and 8,367 is: 12,552.19

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,755.25 : 28,136.67 = 8,367 : x
  2. Step 2: Convert to fraction form
    18,755.25/28,136.67 = 8,367/x
  3. Step 3: Cross multiply
    18,755.25x = 28,136.67 × 8,367
  4. Step 4: Simplify right side
    18,755.25x = 235,419,517.89
  5. Step 5: Solve for x
    x = 235,419,517.89/18,755.25
  6. Step 6: Final answer
    x = 12,552.19

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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.