Home / 28,747.92-43,128.37-8,759.21

Finding the Fourth Proportional to 28,747.92, 43,128.37 and 8,759.21

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Solution

The fourth proportional to 28,747.92, 43,128.37 and 8,759.21 is: 13,140.79

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,747.92 : 43,128.37 = 8,759.21 : x
  2. Step 2: Convert to fraction form
    28,747.92/43,128.37 = 8,759.21/x
  3. Step 3: Cross multiply
    28,747.92x = 43,128.37 × 8,759.21
  4. Step 4: Simplify right side
    28,747.92x = 377,770,449.79
  5. Step 5: Solve for x
    x = 377,770,449.79/28,747.92
  6. Step 6: Final answer
    x = 13,140.79

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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.