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Finding the Fourth Proportional to 28,702.38, 39,614.04 and 16,765.68

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Solution

The fourth proportional to 28,702.38, 39,614.04 and 16,765.68 is: 23,139.42

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,702.38 : 39,614.04 = 16,765.68 : x
  2. Step 2: Convert to fraction form
    28,702.38/39,614.04 = 16,765.68/x
  3. Step 3: Cross multiply
    28,702.38x = 39,614.04 × 16,765.68
  4. Step 4: Simplify right side
    28,702.38x = 664,156,318.15
  5. Step 5: Solve for x
    x = 664,156,318.15/28,702.38
  6. Step 6: Final answer
    x = 23,139.42

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.