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Finding the Third Proportional to 18,451.13 and 39,819.38

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Solution

The third proportional to 18,451.13 and 39,819.38 is: 85,934.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,451.13 : 39,819.38 = 39,819.38 : x
  2. Step 2: Convert to fraction form
    18,451.13/39,819.38 = 39,819.38/x
  3. Step 3: Cross multiply
    18,451.13x = 39,819.38 × 39,819.38
  4. Step 4: Simplify right side
    18,451.13x = 1,585,582,625.39
  5. Step 5: Solve for x
    x = 1,585,582,625.39/18,451.13
  6. Step 6: Final answer
    x = 85,934.20

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Why These Related Problems?

These problems maintain the same ratio (2.16) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.