Home / 10,481.22-15,721.74-2,689.92

Finding the Fourth Proportional to 10,481.22, 15,721.74 and 2,689.92

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Solution

The fourth proportional to 10,481.22, 15,721.74 and 2,689.92 is: 4,034.86

Step by Step Solution

  1. Step 1: Write the proportion equation
    10,481.22 : 15,721.74 = 2,689.92 : x
  2. Step 2: Convert to fraction form
    10,481.22/15,721.74 = 2,689.92/x
  3. Step 3: Cross multiply
    10,481.22x = 15,721.74 × 2,689.92
  4. Step 4: Simplify right side
    10,481.22x = 42,290,222.86
  5. Step 5: Solve for x
    x = 42,290,222.86/10,481.22
  6. Step 6: Final answer
    x = 4,034.86

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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.