Home / 11,091.20-15,290.24-6,896.64

Finding the Fourth Proportional to 11,091.20, 15,290.24 and 6,896.64

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Solution

The fourth proportional to 11,091.20, 15,290.24 and 6,896.64 is: 9,507.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    11,091.20 : 15,290.24 = 6,896.64 : x
  2. Step 2: Convert to fraction form
    11,091.20/15,290.24 = 6,896.64/x
  3. Step 3: Cross multiply
    11,091.20x = 15,290.24 × 6,896.64
  4. Step 4: Simplify right side
    11,091.20x = 105,451,280.79
  5. Step 5: Solve for x
    x = 105,451,280.79/11,091.20
  6. Step 6: Final answer
    x = 9,507.65

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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.