Home / 28,821.38-43,229.12-7,760.57

Finding the Fourth Proportional to 28,821.38, 43,229.12 and 7,760.57

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Solution

The fourth proportional to 28,821.38, 43,229.12 and 7,760.57 is: 11,640.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,821.38 : 43,229.12 = 7,760.57 : x
  2. Step 2: Convert to fraction form
    28,821.38/43,229.12 = 7,760.57/x
  3. Step 3: Cross multiply
    28,821.38x = 43,229.12 × 7,760.57
  4. Step 4: Simplify right side
    28,821.38x = 335,482,356.85
  5. Step 5: Solve for x
    x = 335,482,356.85/28,821.38
  6. Step 6: Final answer
    x = 11,640.05

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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.