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Finding the Third Proportional to 9,172 and 16,940

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Solution

The third proportional to 9,172 and 16,940 is: 31,286.92

Step by Step Solution

  1. Step 1: Write the proportion equation
    9,172 : 16,940 = 16,940 : x
  2. Step 2: Convert to fraction form
    9,172/16,940 = 16,940/x
  3. Step 3: Cross multiply
    9,172x = 16,940 × 16,940
  4. Step 4: Simplify right side
    9,172x = 286,963,600
  5. Step 5: Solve for x
    x = 286,963,600/9,172
  6. Step 6: Final answer
    x = 31,286.92

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Why These Related Problems?

These problems maintain the same ratio (1.85) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.