Home / 28,738.12-43,107.90-7,961.56

Finding the Fourth Proportional to 28,738.12, 43,107.90 and 7,961.56

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Solution

The fourth proportional to 28,738.12, 43,107.90 and 7,961.56 is: 11,942.54

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,738.12 : 43,107.90 = 7,961.56 : x
  2. Step 2: Convert to fraction form
    28,738.12/43,107.90 = 7,961.56/x
  3. Step 3: Cross multiply
    28,738.12x = 43,107.90 × 7,961.56
  4. Step 4: Simplify right side
    28,738.12x = 343,206,132.32
  5. Step 5: Solve for x
    x = 343,206,132.32/28,738.12
  6. Step 6: Final answer
    x = 11,942.54

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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.