Home / 13,380.22-20,082.48-7,145.56

Finding the Fourth Proportional to 13,380.22, 20,082.48 and 7,145.56

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Solution

The fourth proportional to 13,380.22, 20,082.48 and 7,145.56 is: 10,724.83

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,380.22 : 20,082.48 = 7,145.56 : x
  2. Step 2: Convert to fraction form
    13,380.22/20,082.48 = 7,145.56/x
  3. Step 3: Cross multiply
    13,380.22x = 20,082.48 × 7,145.56
  4. Step 4: Simplify right side
    13,380.22x = 143,500,565.79
  5. Step 5: Solve for x
    x = 143,500,565.79/13,380.22
  6. Step 6: Final answer
    x = 10,724.83

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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.