Home / 11,230.28-15,499.22-9,338.61

Finding the Fourth Proportional to 11,230.28, 15,499.22 and 9,338.61

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Solution

The fourth proportional to 11,230.28, 15,499.22 and 9,338.61 is: 12,888.47

Step by Step Solution

  1. Step 1: Write the proportion equation
    11,230.28 : 15,499.22 = 9,338.61 : x
  2. Step 2: Convert to fraction form
    11,230.28/15,499.22 = 9,338.61/x
  3. Step 3: Cross multiply
    11,230.28x = 15,499.22 × 9,338.61
  4. Step 4: Simplify right side
    11,230.28x = 144,741,170.88
  5. Step 5: Solve for x
    x = 144,741,170.88/11,230.28
  6. Step 6: Final answer
    x = 12,888.47

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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.