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Finding the Third Proportional to 8,606 and 13,409

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Solution

The third proportional to 8,606 and 13,409 is: 20,892.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,606 : 13,409 = 13,409 : x
  2. Step 2: Convert to fraction form
    8,606/13,409 = 13,409/x
  3. Step 3: Cross multiply
    8,606x = 13,409 × 13,409
  4. Step 4: Simplify right side
    8,606x = 179,801,281
  5. Step 5: Solve for x
    x = 179,801,281/8,606
  6. Step 6: Final answer
    x = 20,892.55

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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.