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Finding the Third Proportional to 17,622 and 18,857

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Solution

The third proportional to 17,622 and 18,857 is: 20,178.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    17,622 : 18,857 = 18,857 : x
  2. Step 2: Convert to fraction form
    17,622/18,857 = 18,857/x
  3. Step 3: Cross multiply
    17,622x = 18,857 × 18,857
  4. Step 4: Simplify right side
    17,622x = 355,586,449
  5. Step 5: Solve for x
    x = 355,586,449/17,622
  6. Step 6: Final answer
    x = 20,178.55

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Why These Related Problems?

These problems maintain the same ratio (1.07) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.