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Finding the Third Proportional to 11,678 and 15,734

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Solution

The third proportional to 11,678 and 15,734 is: 21,198.73

Step by Step Solution

  1. Step 1: Write the proportion equation
    11,678 : 15,734 = 15,734 : x
  2. Step 2: Convert to fraction form
    11,678/15,734 = 15,734/x
  3. Step 3: Cross multiply
    11,678x = 15,734 × 15,734
  4. Step 4: Simplify right side
    11,678x = 247,558,756
  5. Step 5: Solve for x
    x = 247,558,756/11,678
  6. Step 6: Final answer
    x = 21,198.73

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Why These Related Problems?

These problems maintain the same ratio (1.35) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.