Home / 10,074.75-15,112.10-2,679.20

Finding the Fourth Proportional to 10,074.75, 15,112.10 and 2,679.20

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Solution

The fourth proportional to 10,074.75, 15,112.10 and 2,679.20 is: 4,018.79

Step by Step Solution

  1. Step 1: Write the proportion equation
    10,074.75 : 15,112.10 = 2,679.20 : x
  2. Step 2: Convert to fraction form
    10,074.75/15,112.10 = 2,679.20/x
  3. Step 3: Cross multiply
    10,074.75x = 15,112.10 × 2,679.20
  4. Step 4: Simplify right side
    10,074.75x = 40,488,338.32
  5. Step 5: Solve for x
    x = 40,488,338.32/10,074.75
  6. Step 6: Final answer
    x = 4,018.79

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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.