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Finding the Third Proportional to 15,339.38 and 20,487.94

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Solution

The third proportional to 15,339.38 and 20,487.94 is: 27,364.58

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,339.38 : 20,487.94 = 20,487.94 : x
  2. Step 2: Convert to fraction form
    15,339.38/20,487.94 = 20,487.94/x
  3. Step 3: Cross multiply
    15,339.38x = 20,487.94 × 20,487.94
  4. Step 4: Simplify right side
    15,339.38x = 419,755,583.00
  5. Step 5: Solve for x
    x = 419,755,583.00/15,339.38
  6. Step 6: Final answer
    x = 27,364.58

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Why These Related Problems?

These problems maintain the same ratio (1.34) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.