Home / 12,199.62-18,298.38-3,879.84

Finding the Fourth Proportional to 12,199.62, 18,298.38 and 3,879.84

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Solution

The fourth proportional to 12,199.62, 18,298.38 and 3,879.84 is: 5,819.43

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,199.62 : 18,298.38 = 3,879.84 : x
  2. Step 2: Convert to fraction form
    12,199.62/18,298.38 = 3,879.84/x
  3. Step 3: Cross multiply
    12,199.62x = 18,298.38 × 3,879.84
  4. Step 4: Simplify right side
    12,199.62x = 70,994,786.66
  5. Step 5: Solve for x
    x = 70,994,786.66/12,199.62
  6. Step 6: Final answer
    x = 5,819.43

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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.