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Finding the Third Proportional to 11,002 and 15,578

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Solution

The third proportional to 11,002 and 15,578 is: 22,057.27

Step by Step Solution

  1. Step 1: Write the proportion equation
    11,002 : 15,578 = 15,578 : x
  2. Step 2: Convert to fraction form
    11,002/15,578 = 15,578/x
  3. Step 3: Cross multiply
    11,002x = 15,578 × 15,578
  4. Step 4: Simplify right side
    11,002x = 242,674,084
  5. Step 5: Solve for x
    x = 242,674,084/11,002
  6. Step 6: Final answer
    x = 22,057.27

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Why These Related Problems?

These problems maintain the same ratio (1.42) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.