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Finding the Third Proportional to 6,489 and 13,626

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Solution

The third proportional to 6,489 and 13,626 is: 28,612.71

Step by Step Solution

  1. Step 1: Write the proportion equation
    6,489 : 13,626 = 13,626 : x
  2. Step 2: Convert to fraction form
    6,489/13,626 = 13,626/x
  3. Step 3: Cross multiply
    6,489x = 13,626 × 13,626
  4. Step 4: Simplify right side
    6,489x = 185,667,876
  5. Step 5: Solve for x
    x = 185,667,876/6,489
  6. Step 6: Final answer
    x = 28,612.71

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Why These Related Problems?

These problems maintain the same ratio (2.10) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.