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Finding the Third Proportional to 18,342 and 38,484

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Solution

The third proportional to 18,342 and 38,484 is: 80,744.64

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,342 : 38,484 = 38,484 : x
  2. Step 2: Convert to fraction form
    18,342/38,484 = 38,484/x
  3. Step 3: Cross multiply
    18,342x = 38,484 × 38,484
  4. Step 4: Simplify right side
    18,342x = 1,481,018,256
  5. Step 5: Solve for x
    x = 1,481,018,256/18,342
  6. Step 6: Final answer
    x = 80,744.64

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Why These Related Problems?

These problems maintain the same ratio (2.10) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.