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Finding the Third Proportional to 13,656 and 21,713

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Solution

The third proportional to 13,656 and 21,713 is: 34,523.61

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,656 : 21,713 = 21,713 : x
  2. Step 2: Convert to fraction form
    13,656/21,713 = 21,713/x
  3. Step 3: Cross multiply
    13,656x = 21,713 × 21,713
  4. Step 4: Simplify right side
    13,656x = 471,454,369
  5. Step 5: Solve for x
    x = 471,454,369/13,656
  6. Step 6: Final answer
    x = 34,523.61

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Why These Related Problems?

These problems maintain the same ratio (1.59) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.