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Finding the Third Proportional to 5,518 and 10,759

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Solution

The third proportional to 5,518 and 10,759 is: 20,977.91

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,518 : 10,759 = 10,759 : x
  2. Step 2: Convert to fraction form
    5,518/10,759 = 10,759/x
  3. Step 3: Cross multiply
    5,518x = 10,759 × 10,759
  4. Step 4: Simplify right side
    5,518x = 115,756,081
  5. Step 5: Solve for x
    x = 115,756,081/5,518
  6. Step 6: Final answer
    x = 20,977.91

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Why These Related Problems?

These problems maintain the same ratio (1.95) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.