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Finding the Third Proportional to 17,611 and 26,420

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Solution

The third proportional to 17,611 and 26,420 is: 39,635.25

Step by Step Solution

  1. Step 1: Write the proportion equation
    17,611 : 26,420 = 26,420 : x
  2. Step 2: Convert to fraction form
    17,611/26,420 = 26,420/x
  3. Step 3: Cross multiply
    17,611x = 26,420 × 26,420
  4. Step 4: Simplify right side
    17,611x = 698,016,400
  5. Step 5: Solve for x
    x = 698,016,400/17,611
  6. Step 6: Final answer
    x = 39,635.25

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.