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Finding the Third Proportional to 18,909 and 41,397

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Solution

The third proportional to 18,909 and 41,397 is: 90,629.42

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,909 : 41,397 = 41,397 : x
  2. Step 2: Convert to fraction form
    18,909/41,397 = 41,397/x
  3. Step 3: Cross multiply
    18,909x = 41,397 × 41,397
  4. Step 4: Simplify right side
    18,909x = 1,713,711,609
  5. Step 5: Solve for x
    x = 1,713,711,609/18,909
  6. Step 6: Final answer
    x = 90,629.42

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Why These Related Problems?

These problems maintain the same ratio (2.19) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.