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Finding the Third Proportional to 18,140 and 27,748

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Solution

The third proportional to 18,140 and 27,748 is: 42,444.96

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,140 : 27,748 = 27,748 : x
  2. Step 2: Convert to fraction form
    18,140/27,748 = 27,748/x
  3. Step 3: Cross multiply
    18,140x = 27,748 × 27,748
  4. Step 4: Simplify right side
    18,140x = 769,951,504
  5. Step 5: Solve for x
    x = 769,951,504/18,140
  6. Step 6: Final answer
    x = 42,444.96

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Why These Related Problems?

These problems maintain the same ratio (1.53) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.