Home / 10,191.92-15,290.28-3,171.60

Finding the Fourth Proportional to 10,191.92, 15,290.28 and 3,171.60

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Solution

The fourth proportional to 10,191.92, 15,290.28 and 3,171.60 is: 4,758.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    10,191.92 : 15,290.28 = 3,171.60 : x
  2. Step 2: Convert to fraction form
    10,191.92/15,290.28 = 3,171.60/x
  3. Step 3: Cross multiply
    10,191.92x = 15,290.28 × 3,171.60
  4. Step 4: Simplify right side
    10,191.92x = 48,494,652.05
  5. Step 5: Solve for x
    x = 48,494,652.05/10,191.92
  6. Step 6: Final answer
    x = 4,758.15

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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.