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Finding the Third Proportional to 18,138 and 38,452

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Solution

The third proportional to 18,138 and 38,452 is: 81,517.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,138 : 38,452 = 38,452 : x
  2. Step 2: Convert to fraction form
    18,138/38,452 = 38,452/x
  3. Step 3: Cross multiply
    18,138x = 38,452 × 38,452
  4. Step 4: Simplify right side
    18,138x = 1,478,556,304
  5. Step 5: Solve for x
    x = 1,478,556,304/18,138
  6. Step 6: Final answer
    x = 81,517.05

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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.