Home / 10,956.11-15,120.49-6,481.30

Finding the Fourth Proportional to 10,956.11, 15,120.49 and 6,481.30

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Solution

The fourth proportional to 10,956.11, 15,120.49 and 6,481.30 is: 8,944.82

Step by Step Solution

  1. Step 1: Write the proportion equation
    10,956.11 : 15,120.49 = 6,481.30 : x
  2. Step 2: Convert to fraction form
    10,956.11/15,120.49 = 6,481.30/x
  3. Step 3: Cross multiply
    10,956.11x = 15,120.49 × 6,481.30
  4. Step 4: Simplify right side
    10,956.11x = 98,000,436.56
  5. Step 5: Solve for x
    x = 98,000,436.56/10,956.11
  6. Step 6: Final answer
    x = 8,944.82

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.