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Finding the Third Proportional to 11,487 and 17,611

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Solution

The third proportional to 11,487 and 17,611 is: 26,999.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    11,487 : 17,611 = 17,611 : x
  2. Step 2: Convert to fraction form
    11,487/17,611 = 17,611/x
  3. Step 3: Cross multiply
    11,487x = 17,611 × 17,611
  4. Step 4: Simplify right side
    11,487x = 310,147,321
  5. Step 5: Solve for x
    x = 310,147,321/11,487
  6. Step 6: Final answer
    x = 26,999.85

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Why These Related Problems?

These problems maintain the same ratio (1.53) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.