Home / 18,736.11-28,115.42-7,489.44

Finding the Fourth Proportional to 18,736.11, 28,115.42 and 7,489.44

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Solution

The fourth proportional to 18,736.11, 28,115.42 and 7,489.44 is: 11,238.66

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,736.11 : 28,115.42 = 7,489.44 : x
  2. Step 2: Convert to fraction form
    18,736.11/28,115.42 = 7,489.44/x
  3. Step 3: Cross multiply
    18,736.11x = 28,115.42 × 7,489.44
  4. Step 4: Simplify right side
    18,736.11x = 210,568,713.72
  5. Step 5: Solve for x
    x = 210,568,713.72/18,736.11
  6. Step 6: Final answer
    x = 11,238.66

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.