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Finding the Fourth Proportional to 18,766.62, 28,093.84 and 11,348.64

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Solution

The fourth proportional to 18,766.62, 28,093.84 and 11,348.64 is: 16,989.04

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,766.62 : 28,093.84 = 11,348.64 : x
  2. Step 2: Convert to fraction form
    18,766.62/28,093.84 = 11,348.64/x
  3. Step 3: Cross multiply
    18,766.62x = 28,093.84 × 11,348.64
  4. Step 4: Simplify right side
    18,766.62x = 318,826,876.38
  5. Step 5: Solve for x
    x = 318,826,876.38/18,766.62
  6. Step 6: Final answer
    x = 16,989.04

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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.