Home / 28,680.74-43,027.18-8,960.78

Finding the Fourth Proportional to 28,680.74, 43,027.18 and 8,960.78

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Solution

The fourth proportional to 28,680.74, 43,027.18 and 8,960.78 is: 13,443.07

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,680.74 : 43,027.18 = 8,960.78 : x
  2. Step 2: Convert to fraction form
    28,680.74/43,027.18 = 8,960.78/x
  3. Step 3: Cross multiply
    28,680.74x = 43,027.18 × 8,960.78
  4. Step 4: Simplify right side
    28,680.74x = 385,557,229.57
  5. Step 5: Solve for x
    x = 385,557,229.57/28,680.74
  6. Step 6: Final answer
    x = 13,443.07

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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.