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Finding the Third Proportional to 13,611 and 18,219

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Solution

The third proportional to 13,611 and 18,219 is: 24,387.04

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,611 : 18,219 = 18,219 : x
  2. Step 2: Convert to fraction form
    13,611/18,219 = 18,219/x
  3. Step 3: Cross multiply
    13,611x = 18,219 × 18,219
  4. Step 4: Simplify right side
    13,611x = 331,931,961
  5. Step 5: Solve for x
    x = 331,931,961/13,611
  6. Step 6: Final answer
    x = 24,387.04

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Why These Related Problems?

These problems maintain the same ratio (1.34) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.