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Finding the Third Proportional to 13,936 and 21,672

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Solution

The third proportional to 13,936 and 21,672 is: 33,702.32

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,936 : 21,672 = 21,672 : x
  2. Step 2: Convert to fraction form
    13,936/21,672 = 21,672/x
  3. Step 3: Cross multiply
    13,936x = 21,672 × 21,672
  4. Step 4: Simplify right side
    13,936x = 469,675,584
  5. Step 5: Solve for x
    x = 469,675,584/13,936
  6. Step 6: Final answer
    x = 33,702.32

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Why These Related Problems?

These problems maintain the same ratio (1.56) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.