Home / 28,738.20-43,107.30-7,961.70

Finding the Fourth Proportional to 28,738.20, 43,107.30 and 7,961.70

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Solution

The fourth proportional to 28,738.20, 43,107.30 and 7,961.70 is: 11,942.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,738.20 : 43,107.30 = 7,961.70 : x
  2. Step 2: Convert to fraction form
    28,738.20/43,107.30 = 7,961.70/x
  3. Step 3: Cross multiply
    28,738.20x = 43,107.30 × 7,961.70
  4. Step 4: Simplify right side
    28,738.20x = 343,207,390.41
  5. Step 5: Solve for x
    x = 343,207,390.41/28,738.20
  6. Step 6: Final answer
    x = 11,942.55

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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.