Home / 10,120.20-15,180.30-2,724.47

Finding the Fourth Proportional to 10,120.20, 15,180.30 and 2,724.47

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Solution

The fourth proportional to 10,120.20, 15,180.30 and 2,724.47 is: 4,086.71

Step by Step Solution

  1. Step 1: Write the proportion equation
    10,120.20 : 15,180.30 = 2,724.47 : x
  2. Step 2: Convert to fraction form
    10,120.20/15,180.30 = 2,724.47/x
  3. Step 3: Cross multiply
    10,120.20x = 15,180.30 × 2,724.47
  4. Step 4: Simplify right side
    10,120.20x = 41,358,271.94
  5. Step 5: Solve for x
    x = 41,358,271.94/10,120.20
  6. Step 6: Final answer
    x = 4,086.71

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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.