Home / 13,943.12-20,917.40-4,082.56

Finding the Fourth Proportional to 13,943.12, 20,917.40 and 4,082.56

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Solution

The fourth proportional to 13,943.12, 20,917.40 and 4,082.56 is: 6,124.64

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,943.12 : 20,917.40 = 4,082.56 : x
  2. Step 2: Convert to fraction form
    13,943.12/20,917.40 = 4,082.56/x
  3. Step 3: Cross multiply
    13,943.12x = 20,917.40 × 4,082.56
  4. Step 4: Simplify right side
    13,943.12x = 85,396,540.54
  5. Step 5: Solve for x
    x = 85,396,540.54/13,943.12
  6. Step 6: Final answer
    x = 6,124.64

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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.