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Finding the Third Proportional to 15,512 and 22,156

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Solution

The third proportional to 15,512 and 22,156 is: 31,645.72

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,512 : 22,156 = 22,156 : x
  2. Step 2: Convert to fraction form
    15,512/22,156 = 22,156/x
  3. Step 3: Cross multiply
    15,512x = 22,156 × 22,156
  4. Step 4: Simplify right side
    15,512x = 490,888,336
  5. Step 5: Solve for x
    x = 490,888,336/15,512
  6. Step 6: Final answer
    x = 31,645.72

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Why These Related Problems?

These problems maintain the same ratio (1.43) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.