Home / 20,792.94-31,202.38-8,311.02

Finding the Fourth Proportional to 20,792.94, 31,202.38 and 8,311.02

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Solution

The fourth proportional to 20,792.94, 31,202.38 and 8,311.02 is: 12,471.71

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,792.94 : 31,202.38 = 8,311.02 : x
  2. Step 2: Convert to fraction form
    20,792.94/31,202.38 = 8,311.02/x
  3. Step 3: Cross multiply
    20,792.94x = 31,202.38 × 8,311.02
  4. Step 4: Simplify right side
    20,792.94x = 259,323,604.23
  5. Step 5: Solve for x
    x = 259,323,604.23/20,792.94
  6. Step 6: Final answer
    x = 12,471.71

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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.