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Finding the Third Proportional to 18,842 and 27,719

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Solution

The third proportional to 18,842 and 27,719 is: 40,778.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,842 : 27,719 = 27,719 : x
  2. Step 2: Convert to fraction form
    18,842/27,719 = 27,719/x
  3. Step 3: Cross multiply
    18,842x = 27,719 × 27,719
  4. Step 4: Simplify right side
    18,842x = 768,342,961
  5. Step 5: Solve for x
    x = 768,342,961/18,842
  6. Step 6: Final answer
    x = 40,778.21

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Why These Related Problems?

These problems maintain the same ratio (1.47) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.