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Finding the Third Proportional to 9,881 and 13,309

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Solution

The third proportional to 9,881 and 13,309 is: 17,926.27

Step by Step Solution

  1. Step 1: Write the proportion equation
    9,881 : 13,309 = 13,309 : x
  2. Step 2: Convert to fraction form
    9,881/13,309 = 13,309/x
  3. Step 3: Cross multiply
    9,881x = 13,309 × 13,309
  4. Step 4: Simplify right side
    9,881x = 177,129,481
  5. Step 5: Solve for x
    x = 177,129,481/9,881
  6. Step 6: Final answer
    x = 17,926.27

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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.