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Finding the Fourth Proportional to 18,249.62, 27,378.49 and 7,157.36

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Solution

The fourth proportional to 18,249.62, 27,378.49 and 7,157.36 is: 10,737.63

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,249.62 : 27,378.49 = 7,157.36 : x
  2. Step 2: Convert to fraction form
    18,249.62/27,378.49 = 7,157.36/x
  3. Step 3: Cross multiply
    18,249.62x = 27,378.49 × 7,157.36
  4. Step 4: Simplify right side
    18,249.62x = 195,957,554.40
  5. Step 5: Solve for x
    x = 195,957,554.40/18,249.62
  6. Step 6: Final answer
    x = 10,737.63

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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.