Home / 12,105.88-18,156.64-3,338.62

Finding the Fourth Proportional to 12,105.88, 18,156.64 and 3,338.62

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Solution

The fourth proportional to 12,105.88, 18,156.64 and 3,338.62 is: 5,007.33

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,105.88 : 18,156.64 = 3,338.62 : x
  2. Step 2: Convert to fraction form
    12,105.88/18,156.64 = 3,338.62/x
  3. Step 3: Cross multiply
    12,105.88x = 18,156.64 × 3,338.62
  4. Step 4: Simplify right side
    12,105.88x = 60,618,121.44
  5. Step 5: Solve for x
    x = 60,618,121.44/12,105.88
  6. Step 6: Final answer
    x = 5,007.33

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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.