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Finding the Third Proportional to 18,348 and 39,918

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Solution

The third proportional to 18,348 and 39,918 is: 86,845.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,348 : 39,918 = 39,918 : x
  2. Step 2: Convert to fraction form
    18,348/39,918 = 39,918/x
  3. Step 3: Cross multiply
    18,348x = 39,918 × 39,918
  4. Step 4: Simplify right side
    18,348x = 1,593,446,724
  5. Step 5: Solve for x
    x = 1,593,446,724/18,348
  6. Step 6: Final answer
    x = 86,845.80

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Why These Related Problems?

These problems maintain the same ratio (2.18) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.