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Finding the Third Proportional to 8,728 and 18,020

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Solution

The third proportional to 8,728 and 18,020 is: 37,204.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,728 : 18,020 = 18,020 : x
  2. Step 2: Convert to fraction form
    8,728/18,020 = 18,020/x
  3. Step 3: Cross multiply
    8,728x = 18,020 × 18,020
  4. Step 4: Simplify right side
    8,728x = 324,720,400
  5. Step 5: Solve for x
    x = 324,720,400/8,728
  6. Step 6: Final answer
    x = 37,204.45

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Why These Related Problems?

These problems maintain the same ratio (2.06) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.