Home / 10,481.80-15,721.18-2,690.12

Finding the Fourth Proportional to 10,481.80, 15,721.18 and 2,690.12

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Solution

The fourth proportional to 10,481.80, 15,721.18 and 2,690.12 is: 4,034.79

Step by Step Solution

  1. Step 1: Write the proportion equation
    10,481.80 : 15,721.18 = 2,690.12 : x
  2. Step 2: Convert to fraction form
    10,481.80/15,721.18 = 2,690.12/x
  3. Step 3: Cross multiply
    10,481.80x = 15,721.18 × 2,690.12
  4. Step 4: Simplify right side
    10,481.80x = 42,291,860.74
  5. Step 5: Solve for x
    x = 42,291,860.74/10,481.80
  6. Step 6: Final answer
    x = 4,034.79

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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.