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Finding the Third Proportional to 18,378 and 27,531

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Solution

The third proportional to 18,378 and 27,531 is: 41,242.57

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,378 : 27,531 = 27,531 : x
  2. Step 2: Convert to fraction form
    18,378/27,531 = 27,531/x
  3. Step 3: Cross multiply
    18,378x = 27,531 × 27,531
  4. Step 4: Simplify right side
    18,378x = 757,955,961
  5. Step 5: Solve for x
    x = 757,955,961/18,378
  6. Step 6: Final answer
    x = 41,242.57

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.