Home / 13,351.82-20,028.68-3,991.73

Finding the Fourth Proportional to 13,351.82, 20,028.68 and 3,991.73

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Solution

The fourth proportional to 13,351.82, 20,028.68 and 3,991.73 is: 5,987.88

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,351.82 : 20,028.68 = 3,991.73 : x
  2. Step 2: Convert to fraction form
    13,351.82/20,028.68 = 3,991.73/x
  3. Step 3: Cross multiply
    13,351.82x = 20,028.68 × 3,991.73
  4. Step 4: Simplify right side
    13,351.82x = 79,949,082.82
  5. Step 5: Solve for x
    x = 79,949,082.82/13,351.82
  6. Step 6: Final answer
    x = 5,987.88

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1.5x scale

Why These Related Problems?

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