Home / 10,112.87-15,170.63-3,540.94

Finding the Fourth Proportional to 10,112.87, 15,170.63 and 3,540.94

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Solution

The fourth proportional to 10,112.87, 15,170.63 and 3,540.94 is: 5,311.87

Step by Step Solution

  1. Step 1: Write the proportion equation
    10,112.87 : 15,170.63 = 3,540.94 : x
  2. Step 2: Convert to fraction form
    10,112.87/15,170.63 = 3,540.94/x
  3. Step 3: Cross multiply
    10,112.87x = 15,170.63 × 3,540.94
  4. Step 4: Simplify right side
    10,112.87x = 53,718,234.96
  5. Step 5: Solve for x
    x = 53,718,234.96/10,112.87
  6. Step 6: Final answer
    x = 5,311.87

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1.5x scale

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.