Home / 11,518.68-17,278.38-3,198.78

Finding the Fourth Proportional to 11,518.68, 17,278.38 and 3,198.78

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Solution

The fourth proportional to 11,518.68, 17,278.38 and 3,198.78 is: 4,798.27

Step by Step Solution

  1. Step 1: Write the proportion equation
    11,518.68 : 17,278.38 = 3,198.78 : x
  2. Step 2: Convert to fraction form
    11,518.68/17,278.38 = 3,198.78/x
  3. Step 3: Cross multiply
    11,518.68x = 17,278.38 × 3,198.78
  4. Step 4: Simplify right side
    11,518.68x = 55,269,736.38
  5. Step 5: Solve for x
    x = 55,269,736.38/11,518.68
  6. Step 6: Final answer
    x = 4,798.27

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These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.