Home / 20,142.42-30,211.31-5,352.54

Finding the Fourth Proportional to 20,142.42, 30,211.31 and 5,352.54

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Solution

The fourth proportional to 20,142.42, 30,211.31 and 5,352.54 is: 8,028.19

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,142.42 : 30,211.31 = 5,352.54 : x
  2. Step 2: Convert to fraction form
    20,142.42/30,211.31 = 5,352.54/x
  3. Step 3: Cross multiply
    20,142.42x = 30,211.31 × 5,352.54
  4. Step 4: Simplify right side
    20,142.42x = 161,707,218.46
  5. Step 5: Solve for x
    x = 161,707,218.46/20,142.42
  6. Step 6: Final answer
    x = 8,028.19

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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.