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Finding the Third Proportional to 9,908 and 19,672

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Solution

The third proportional to 9,908 and 19,672 is: 39,058.09

Step by Step Solution

  1. Step 1: Write the proportion equation
    9,908 : 19,672 = 19,672 : x
  2. Step 2: Convert to fraction form
    9,908/19,672 = 19,672/x
  3. Step 3: Cross multiply
    9,908x = 19,672 × 19,672
  4. Step 4: Simplify right side
    9,908x = 386,987,584
  5. Step 5: Solve for x
    x = 386,987,584/9,908
  6. Step 6: Final answer
    x = 39,058.09

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Why These Related Problems?

These problems maintain the same ratio (1.99) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.