Home / 28,620.24-42,942.72-15,481.86

Finding the Fourth Proportional to 28,620.24, 42,942.72 and 15,481.86

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Solution

The fourth proportional to 28,620.24, 42,942.72 and 15,481.86 is: 23,229.48

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,620.24 : 42,942.72 = 15,481.86 : x
  2. Step 2: Convert to fraction form
    28,620.24/42,942.72 = 15,481.86/x
  3. Step 3: Cross multiply
    28,620.24x = 42,942.72 × 15,481.86
  4. Step 4: Simplify right side
    28,620.24x = 664,833,179.06
  5. Step 5: Solve for x
    x = 664,833,179.06/28,620.24
  6. Step 6: Final answer
    x = 23,229.48

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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.