Home / 20,268.91-30,400.53-5,479.12

Finding the Fourth Proportional to 20,268.91, 30,400.53 and 5,479.12

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Solution

The fourth proportional to 20,268.91, 30,400.53 and 5,479.12 is: 8,217.91

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,268.91 : 30,400.53 = 5,479.12 : x
  2. Step 2: Convert to fraction form
    20,268.91/30,400.53 = 5,479.12/x
  3. Step 3: Cross multiply
    20,268.91x = 30,400.53 × 5,479.12
  4. Step 4: Simplify right side
    20,268.91x = 166,568,151.93
  5. Step 5: Solve for x
    x = 166,568,151.93/20,268.91
  6. Step 6: Final answer
    x = 8,217.91

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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.