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Finding the Third Proportional to 18,220 and 27,708

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Solution

The third proportional to 18,220 and 27,708 is: 42,136.84

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,220 : 27,708 = 27,708 : x
  2. Step 2: Convert to fraction form
    18,220/27,708 = 27,708/x
  3. Step 3: Cross multiply
    18,220x = 27,708 × 27,708
  4. Step 4: Simplify right side
    18,220x = 767,733,264
  5. Step 5: Solve for x
    x = 767,733,264/18,220
  6. Step 6: Final answer
    x = 42,136.84

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Why These Related Problems?

These problems maintain the same ratio (1.52) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.