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Finding the Third Proportional to 8,622 and 12,771

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Solution

The third proportional to 8,622 and 12,771 is: 18,916.54

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,622 : 12,771 = 12,771 : x
  2. Step 2: Convert to fraction form
    8,622/12,771 = 12,771/x
  3. Step 3: Cross multiply
    8,622x = 12,771 × 12,771
  4. Step 4: Simplify right side
    8,622x = 163,098,441
  5. Step 5: Solve for x
    x = 163,098,441/8,622
  6. Step 6: Final answer
    x = 18,916.54

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Why These Related Problems?

These problems maintain the same ratio (1.48) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.