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Finding the Third Proportional to 18,687.38 and 28,578.38

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Solution

The third proportional to 18,687.38 and 28,578.38 is: 43,704.56

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,687.38 : 28,578.38 = 28,578.38 : x
  2. Step 2: Convert to fraction form
    18,687.38/28,578.38 = 28,578.38/x
  3. Step 3: Cross multiply
    18,687.38x = 28,578.38 × 28,578.38
  4. Step 4: Simplify right side
    18,687.38x = 816,723,517.64
  5. Step 5: Solve for x
    x = 816,723,517.64/18,687.38
  6. Step 6: Final answer
    x = 43,704.56

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Why These Related Problems?

These problems maintain the same ratio (1.53) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.