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Finding the Fourth Proportional to 18,589.87, 27,884.94 and 4,738.87

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Solution

The fourth proportional to 18,589.87, 27,884.94 and 4,738.87 is: 7,108.34

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,589.87 : 27,884.94 = 4,738.87 : x
  2. Step 2: Convert to fraction form
    18,589.87/27,884.94 = 4,738.87/x
  3. Step 3: Cross multiply
    18,589.87x = 27,884.94 × 4,738.87
  4. Step 4: Simplify right side
    18,589.87x = 132,143,105.62
  5. Step 5: Solve for x
    x = 132,143,105.62/18,589.87
  6. Step 6: Final answer
    x = 7,108.34

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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.