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Finding the Third Proportional to 15,318 and 17,622

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Solution

The third proportional to 15,318 and 17,622 is: 20,272.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,318 : 17,622 = 17,622 : x
  2. Step 2: Convert to fraction form
    15,318/17,622 = 17,622/x
  3. Step 3: Cross multiply
    15,318x = 17,622 × 17,622
  4. Step 4: Simplify right side
    15,318x = 310,534,884
  5. Step 5: Solve for x
    x = 310,534,884/15,318
  6. Step 6: Final answer
    x = 20,272.55

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Why These Related Problems?

These problems maintain the same ratio (1.15) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.