Home / 11,158.60-15,399.42-6,378.79

Finding the Fourth Proportional to 11,158.60, 15,399.42 and 6,378.79

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Solution

The fourth proportional to 11,158.60, 15,399.42 and 6,378.79 is: 8,803.04

Step by Step Solution

  1. Step 1: Write the proportion equation
    11,158.60 : 15,399.42 = 6,378.79 : x
  2. Step 2: Convert to fraction form
    11,158.60/15,399.42 = 6,378.79/x
  3. Step 3: Cross multiply
    11,158.60x = 15,399.42 × 6,378.79
  4. Step 4: Simplify right side
    11,158.60x = 98,229,589.30
  5. Step 5: Solve for x
    x = 98,229,589.30/11,158.60
  6. Step 6: Final answer
    x = 8,803.04

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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.