Home / 10,120.89-15,183.75-3,195.39

Finding the Fourth Proportional to 10,120.89, 15,183.75 and 3,195.39

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Solution

The fourth proportional to 10,120.89, 15,183.75 and 3,195.39 is: 4,793.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    10,120.89 : 15,183.75 = 3,195.39 : x
  2. Step 2: Convert to fraction form
    10,120.89/15,183.75 = 3,195.39/x
  3. Step 3: Cross multiply
    10,120.89x = 15,183.75 × 3,195.39
  4. Step 4: Simplify right side
    10,120.89x = 48,518,002.91
  5. Step 5: Solve for x
    x = 48,518,002.91/10,120.89
  6. Step 6: Final answer
    x = 4,793.85

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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.