Home / 28,857.62-43,286.51-8,081.30

Finding the Fourth Proportional to 28,857.62, 43,286.51 and 8,081.30

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Solution

The fourth proportional to 28,857.62, 43,286.51 and 8,081.30 is: 12,121.97

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,857.62 : 43,286.51 = 8,081.30 : x
  2. Step 2: Convert to fraction form
    28,857.62/43,286.51 = 8,081.30/x
  3. Step 3: Cross multiply
    28,857.62x = 43,286.51 × 8,081.30
  4. Step 4: Simplify right side
    28,857.62x = 349,811,273.26
  5. Step 5: Solve for x
    x = 349,811,273.26/28,857.62
  6. Step 6: Final answer
    x = 12,121.97

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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.