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Finding the Fourth Proportional to 18,799.26, 28,198.94 and 7,559.78

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Solution

The fourth proportional to 18,799.26, 28,198.94 and 7,559.78 is: 11,339.69

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,799.26 : 28,198.94 = 7,559.78 : x
  2. Step 2: Convert to fraction form
    18,799.26/28,198.94 = 7,559.78/x
  3. Step 3: Cross multiply
    18,799.26x = 28,198.94 × 7,559.78
  4. Step 4: Simplify right side
    18,799.26x = 213,177,782.63
  5. Step 5: Solve for x
    x = 213,177,782.63/18,799.26
  6. Step 6: Final answer
    x = 11,339.69

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1.5x scale

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.