Home / 12,789.12-19,183.68-3,555.84

Finding the Fourth Proportional to 12,789.12, 19,183.68 and 3,555.84

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Solution

The fourth proportional to 12,789.12, 19,183.68 and 3,555.84 is: 5,333.76

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,789.12 : 19,183.68 = 3,555.84 : x
  2. Step 2: Convert to fraction form
    12,789.12/19,183.68 = 3,555.84/x
  3. Step 3: Cross multiply
    12,789.12x = 19,183.68 × 3,555.84
  4. Step 4: Simplify right side
    12,789.12x = 68,214,096.69
  5. Step 5: Solve for x
    x = 68,214,096.69/12,789.12
  6. Step 6: Final answer
    x = 5,333.76

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Similar ratio
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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.