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Finding the Third Proportional to 18,228 and 39,479

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Solution

The third proportional to 18,228 and 39,479 is: 85,505.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,228 : 39,479 = 39,479 : x
  2. Step 2: Convert to fraction form
    18,228/39,479 = 39,479/x
  3. Step 3: Cross multiply
    18,228x = 39,479 × 39,479
  4. Step 4: Simplify right side
    18,228x = 1,558,591,441
  5. Step 5: Solve for x
    x = 1,558,591,441/18,228
  6. Step 6: Final answer
    x = 85,505.35

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Why These Related Problems?

These problems maintain the same ratio (2.17) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.