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Finding the Fourth Proportional to 18,891.94, 28,339.50 and 5,744.43

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Solution

The fourth proportional to 18,891.94, 28,339.50 and 5,744.43 is: 8,617.13

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,891.94 : 28,339.50 = 5,744.43 : x
  2. Step 2: Convert to fraction form
    18,891.94/28,339.50 = 5,744.43/x
  3. Step 3: Cross multiply
    18,891.94x = 28,339.50 × 5,744.43
  4. Step 4: Simplify right side
    18,891.94x = 162,794,273.99
  5. Step 5: Solve for x
    x = 162,794,273.99/18,891.94
  6. Step 6: Final answer
    x = 8,617.13

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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.