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Finding the Third Proportional to 20,398.50 and 28,725

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Solution

The third proportional to 20,398.50 and 28,725 is: 40,450.31

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,398.50 : 28,725 = 28,725 : x
  2. Step 2: Convert to fraction form
    20,398.50/28,725 = 28,725/x
  3. Step 3: Cross multiply
    20,398.50x = 28,725 × 28,725
  4. Step 4: Simplify right side
    20,398.50x = 825,125,625
  5. Step 5: Solve for x
    x = 825,125,625/20,398.50
  6. Step 6: Final answer
    x = 40,450.31

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Why These Related Problems?

These problems maintain the same ratio (1.41) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.