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Finding the Third Proportional to 18,135.50 and 38,448

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Solution

The third proportional to 18,135.50 and 38,448 is: 81,511.33

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,135.50 : 38,448 = 38,448 : x
  2. Step 2: Convert to fraction form
    18,135.50/38,448 = 38,448/x
  3. Step 3: Cross multiply
    18,135.50x = 38,448 × 38,448
  4. Step 4: Simplify right side
    18,135.50x = 1,478,248,704
  5. Step 5: Solve for x
    x = 1,478,248,704/18,135.50
  6. Step 6: Final answer
    x = 81,511.33

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Why These Related Problems?

These problems maintain the same ratio (2.12) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.