Home / 20,142.11-30,213.62-5,352.53

Finding the Fourth Proportional to 20,142.11, 30,213.62 and 5,352.53

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Solution

The fourth proportional to 20,142.11, 30,213.62 and 5,352.53 is: 8,028.91

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,142.11 : 30,213.62 = 5,352.53 : x
  2. Step 2: Convert to fraction form
    20,142.11/30,213.62 = 5,352.53/x
  3. Step 3: Cross multiply
    20,142.11x = 30,213.62 × 5,352.53
  4. Step 4: Simplify right side
    20,142.11x = 161,719,169.77
  5. Step 5: Solve for x
    x = 161,719,169.77/20,142.11
  6. Step 6: Final answer
    x = 8,028.91

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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.