Home / 10,198.20-15,301.89-5,512.72

Finding the Fourth Proportional to 10,198.20, 15,301.89 and 5,512.72

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Solution

The fourth proportional to 10,198.20, 15,301.89 and 5,512.72 is: 8,271.56

Step by Step Solution

  1. Step 1: Write the proportion equation
    10,198.20 : 15,301.89 = 5,512.72 : x
  2. Step 2: Convert to fraction form
    10,198.20/15,301.89 = 5,512.72/x
  3. Step 3: Cross multiply
    10,198.20x = 15,301.89 × 5,512.72
  4. Step 4: Simplify right side
    10,198.20x = 84,355,007.48
  5. Step 5: Solve for x
    x = 84,355,007.48/10,198.20
  6. Step 6: Final answer
    x = 8,271.56

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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.