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Finding the Third Proportional to 8,728 and 20,576

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Solution

The third proportional to 8,728 and 20,576 is: 48,507.31

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,728 : 20,576 = 20,576 : x
  2. Step 2: Convert to fraction form
    8,728/20,576 = 20,576/x
  3. Step 3: Cross multiply
    8,728x = 20,576 × 20,576
  4. Step 4: Simplify right side
    8,728x = 423,371,776
  5. Step 5: Solve for x
    x = 423,371,776/8,728
  6. Step 6: Final answer
    x = 48,507.31

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Why These Related Problems?

These problems maintain the same ratio (2.36) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.