Home / 12,789.20-19,169.40-6,546.80

Finding the Fourth Proportional to 12,789.20, 19,169.40 and 6,546.80

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Solution

The fourth proportional to 12,789.20, 19,169.40 and 6,546.80 is: 9,812.83

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,789.20 : 19,169.40 = 6,546.80 : x
  2. Step 2: Convert to fraction form
    12,789.20/19,169.40 = 6,546.80/x
  3. Step 3: Cross multiply
    12,789.20x = 19,169.40 × 6,546.80
  4. Step 4: Simplify right side
    12,789.20x = 125,498,227.92
  5. Step 5: Solve for x
    x = 125,498,227.92/12,789.20
  6. Step 6: Final answer
    x = 9,812.83

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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.