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Finding the Third Proportional to 18,411 and 25,611

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Solution

The third proportional to 18,411 and 25,611 is: 35,626.71

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,411 : 25,611 = 25,611 : x
  2. Step 2: Convert to fraction form
    18,411/25,611 = 25,611/x
  3. Step 3: Cross multiply
    18,411x = 25,611 × 25,611
  4. Step 4: Simplify right side
    18,411x = 655,923,321
  5. Step 5: Solve for x
    x = 655,923,321/18,411
  6. Step 6: Final answer
    x = 35,626.71

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Why These Related Problems?

These problems maintain the same ratio (1.39) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.