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Finding the Third Proportional to 17,020 and 18,676

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Solution

The third proportional to 17,020 and 18,676 is: 20,493.12

Step by Step Solution

  1. Step 1: Write the proportion equation
    17,020 : 18,676 = 18,676 : x
  2. Step 2: Convert to fraction form
    17,020/18,676 = 18,676/x
  3. Step 3: Cross multiply
    17,020x = 18,676 × 18,676
  4. Step 4: Simplify right side
    17,020x = 348,792,976
  5. Step 5: Solve for x
    x = 348,792,976/17,020
  6. Step 6: Final answer
    x = 20,493.12

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Why These Related Problems?

These problems maintain the same ratio (1.10) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.