Home / 16,872.30-25,308.45-13,919.85

Finding the Fourth Proportional to 16,872.30, 25,308.45 and 13,919.85

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Solution

The fourth proportional to 16,872.30, 25,308.45 and 13,919.85 is: 20,879.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    16,872.30 : 25,308.45 = 13,919.85 : x
  2. Step 2: Convert to fraction form
    16,872.30/25,308.45 = 13,919.85/x
  3. Step 3: Cross multiply
    16,872.30x = 25,308.45 × 13,919.85
  4. Step 4: Simplify right side
    16,872.30x = 352,289,827.73
  5. Step 5: Solve for x
    x = 352,289,827.73/16,872.30
  6. Step 6: Final answer
    x = 20,879.78

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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.