Home / 20,550.36-30,857.97-12,793.80

Finding the Fourth Proportional to 20,550.36, 30,857.97 and 12,793.80

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Solution

The fourth proportional to 20,550.36, 30,857.97 and 12,793.80 is: 19,210.89

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,550.36 : 30,857.97 = 12,793.80 : x
  2. Step 2: Convert to fraction form
    20,550.36/30,857.97 = 12,793.80/x
  3. Step 3: Cross multiply
    20,550.36x = 30,857.97 × 12,793.80
  4. Step 4: Simplify right side
    20,550.36x = 394,790,696.59
  5. Step 5: Solve for x
    x = 394,790,696.59/20,550.36
  6. Step 6: Final answer
    x = 19,210.89

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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.