Home / 11,158.09-15,396.48-7,179.57

Finding the Fourth Proportional to 11,158.09, 15,396.48 and 7,179.57

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Solution

The fourth proportional to 11,158.09, 15,396.48 and 7,179.57 is: 9,906.73

Step by Step Solution

  1. Step 1: Write the proportion equation
    11,158.09 : 15,396.48 = 7,179.57 : x
  2. Step 2: Convert to fraction form
    11,158.09/15,396.48 = 7,179.57/x
  3. Step 3: Cross multiply
    11,158.09x = 15,396.48 × 7,179.57
  4. Step 4: Simplify right side
    11,158.09x = 110,540,105.91
  5. Step 5: Solve for x
    x = 110,540,105.91/11,158.09
  6. Step 6: Final answer
    x = 9,906.73

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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.