Home / 18,129.62-27,193.74-4,981.64

Finding the Fourth Proportional to 18,129.62, 27,193.74 and 4,981.64

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Solution

The fourth proportional to 18,129.62, 27,193.74 and 4,981.64 is: 7,472.28

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,129.62 : 27,193.74 = 4,981.64 : x
  2. Step 2: Convert to fraction form
    18,129.62/27,193.74 = 4,981.64/x
  3. Step 3: Cross multiply
    18,129.62x = 27,193.74 × 4,981.64
  4. Step 4: Simplify right side
    18,129.62x = 135,469,472.24
  5. Step 5: Solve for x
    x = 135,469,472.24/18,129.62
  6. Step 6: Final answer
    x = 7,472.28

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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.