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Finding the Fourth Proportional to 18,891.88, 28,339.41 and 5,744.37

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Solution

The fourth proportional to 18,891.88, 28,339.41 and 5,744.37 is: 8,617.04

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,891.88 : 28,339.41 = 5,744.37 : x
  2. Step 2: Convert to fraction form
    18,891.88/28,339.41 = 5,744.37/x
  3. Step 3: Cross multiply
    18,891.88x = 28,339.41 × 5,744.37
  4. Step 4: Simplify right side
    18,891.88x = 162,792,056.62
  5. Step 5: Solve for x
    x = 162,792,056.62/18,891.88
  6. Step 6: Final answer
    x = 8,617.04

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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.