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Finding the Fourth Proportional to 28,488.33, 42,738.17 and 8,766.14

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Solution

The fourth proportional to 28,488.33, 42,738.17 and 8,766.14 is: 13,150.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,488.33 : 42,738.17 = 8,766.14 : x
  2. Step 2: Convert to fraction form
    28,488.33/42,738.17 = 8,766.14/x
  3. Step 3: Cross multiply
    28,488.33x = 42,738.17 × 8,766.14
  4. Step 4: Simplify right side
    28,488.33x = 374,648,524.04
  5. Step 5: Solve for x
    x = 374,648,524.04/28,488.33
  6. Step 6: Final answer
    x = 13,150.95

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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.