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Finding the Third Proportional to 8,516 and 13,622

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Solution

The third proportional to 8,516 and 13,622 is: 21,789.44

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,516 : 13,622 = 13,622 : x
  2. Step 2: Convert to fraction form
    8,516/13,622 = 13,622/x
  3. Step 3: Cross multiply
    8,516x = 13,622 × 13,622
  4. Step 4: Simplify right side
    8,516x = 185,558,884
  5. Step 5: Solve for x
    x = 185,558,884/8,516
  6. Step 6: Final answer
    x = 21,789.44

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Why These Related Problems?

These problems maintain the same ratio (1.60) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.