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Finding the Third Proportional to 10,896 and 15,540

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Solution

The third proportional to 10,896 and 15,540 is: 22,163.33

Step by Step Solution

  1. Step 1: Write the proportion equation
    10,896 : 15,540 = 15,540 : x
  2. Step 2: Convert to fraction form
    10,896/15,540 = 15,540/x
  3. Step 3: Cross multiply
    10,896x = 15,540 × 15,540
  4. Step 4: Simplify right side
    10,896x = 241,491,600
  5. Step 5: Solve for x
    x = 241,491,600/10,896
  6. Step 6: Final answer
    x = 22,163.33

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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.