Home / 28,764.72-43,149.54-8,778.71

Finding the Fourth Proportional to 28,764.72, 43,149.54 and 8,778.71

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Solution

The fourth proportional to 28,764.72, 43,149.54 and 8,778.71 is: 13,168.82

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,764.72 : 43,149.54 = 8,778.71 : x
  2. Step 2: Convert to fraction form
    28,764.72/43,149.54 = 8,778.71/x
  3. Step 3: Cross multiply
    28,764.72x = 43,149.54 × 8,778.71
  4. Step 4: Simplify right side
    28,764.72x = 378,797,439.09
  5. Step 5: Solve for x
    x = 378,797,439.09/28,764.72
  6. Step 6: Final answer
    x = 13,168.82

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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.