Home / 18,106.60-27,151.80-8,240.80

Finding the Fourth Proportional to 18,106.60, 27,151.80 and 8,240.80

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Solution

The fourth proportional to 18,106.60, 27,151.80 and 8,240.80 is: 12,357.51

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,106.60 : 27,151.80 = 8,240.80 : x
  2. Step 2: Convert to fraction form
    18,106.60/27,151.80 = 8,240.80/x
  3. Step 3: Cross multiply
    18,106.60x = 27,151.80 × 8,240.80
  4. Step 4: Simplify right side
    18,106.60x = 223,752,553.44
  5. Step 5: Solve for x
    x = 223,752,553.44/18,106.60
  6. Step 6: Final answer
    x = 12,357.51

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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.