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Finding the Third Proportional to 8,389 and 17,309

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Solution

The third proportional to 8,389 and 17,309 is: 35,713.61

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,389 : 17,309 = 17,309 : x
  2. Step 2: Convert to fraction form
    8,389/17,309 = 17,309/x
  3. Step 3: Cross multiply
    8,389x = 17,309 × 17,309
  4. Step 4: Simplify right side
    8,389x = 299,601,481
  5. Step 5: Solve for x
    x = 299,601,481/8,389
  6. Step 6: Final answer
    x = 35,713.61

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Why These Related Problems?

These problems maintain the same ratio (2.06) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.