Home / 11,198.43-15,455.26-7,231.07

Finding the Fourth Proportional to 11,198.43, 15,455.26 and 7,231.07

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Solution

The fourth proportional to 11,198.43, 15,455.26 and 7,231.07 is: 9,979.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    11,198.43 : 15,455.26 = 7,231.07 : x
  2. Step 2: Convert to fraction form
    11,198.43/15,455.26 = 7,231.07/x
  3. Step 3: Cross multiply
    11,198.43x = 15,455.26 × 7,231.07
  4. Step 4: Simplify right side
    11,198.43x = 111,758,073.93
  5. Step 5: Solve for x
    x = 111,758,073.93/11,198.43
  6. Step 6: Final answer
    x = 9,979.80

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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.