Home / 13,843.94-20,765.90-3,455.78

Finding the Fourth Proportional to 13,843.94, 20,765.90 and 3,455.78

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Solution

The fourth proportional to 13,843.94, 20,765.90 and 3,455.78 is: 5,183.66

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,843.94 : 20,765.90 = 3,455.78 : x
  2. Step 2: Convert to fraction form
    13,843.94/20,765.90 = 3,455.78/x
  3. Step 3: Cross multiply
    13,843.94x = 20,765.90 × 3,455.78
  4. Step 4: Simplify right side
    13,843.94x = 71,762,286.71
  5. Step 5: Solve for x
    x = 71,762,286.71/13,843.94
  6. Step 6: Final answer
    x = 5,183.66

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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.