Home / 20,711.94-31,062.66-5,920.92

Finding the Fourth Proportional to 20,711.94, 31,062.66 and 5,920.92

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Solution

The fourth proportional to 20,711.94, 31,062.66 and 5,920.92 is: 8,879.88

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,711.94 : 31,062.66 = 5,920.92 : x
  2. Step 2: Convert to fraction form
    20,711.94/31,062.66 = 5,920.92/x
  3. Step 3: Cross multiply
    20,711.94x = 31,062.66 × 5,920.92
  4. Step 4: Simplify right side
    20,711.94x = 183,919,524.85
  5. Step 5: Solve for x
    x = 183,919,524.85/20,711.94
  6. Step 6: Final answer
    x = 8,879.88

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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.