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Finding the Third Proportional to 11,960 and 15,726

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Solution

The third proportional to 11,960 and 15,726 is: 20,677.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    11,960 : 15,726 = 15,726 : x
  2. Step 2: Convert to fraction form
    11,960/15,726 = 15,726/x
  3. Step 3: Cross multiply
    11,960x = 15,726 × 15,726
  4. Step 4: Simplify right side
    11,960x = 247,307,076
  5. Step 5: Solve for x
    x = 247,307,076/11,960
  6. Step 6: Final answer
    x = 20,677.85

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Why These Related Problems?

These problems maintain the same ratio (1.31) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.