Home / 10,102.20-15,155.72-3,176.70

Finding the Fourth Proportional to 10,102.20, 15,155.72 and 3,176.70

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Solution

The fourth proportional to 10,102.20, 15,155.72 and 3,176.70 is: 4,765.81

Step by Step Solution

  1. Step 1: Write the proportion equation
    10,102.20 : 15,155.72 = 3,176.70 : x
  2. Step 2: Convert to fraction form
    10,102.20/15,155.72 = 3,176.70/x
  3. Step 3: Cross multiply
    10,102.20x = 15,155.72 × 3,176.70
  4. Step 4: Simplify right side
    10,102.20x = 48,145,175.72
  5. Step 5: Solve for x
    x = 48,145,175.72/10,102.20
  6. Step 6: Final answer
    x = 4,765.81

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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.