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Finding the Third Proportional to 18,139 and 27,749

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Solution

The third proportional to 18,139 and 27,749 is: 42,450.36

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,139 : 27,749 = 27,749 : x
  2. Step 2: Convert to fraction form
    18,139/27,749 = 27,749/x
  3. Step 3: Cross multiply
    18,139x = 27,749 × 27,749
  4. Step 4: Simplify right side
    18,139x = 770,007,001
  5. Step 5: Solve for x
    x = 770,007,001/18,139
  6. Step 6: Final answer
    x = 42,450.36

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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.