Home / 18,811.57-28,198.39-11,796.54

Finding the Fourth Proportional to 18,811.57, 28,198.39 and 11,796.54

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Solution

The fourth proportional to 18,811.57, 28,198.39 and 11,796.54 is: 17,682.92

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,811.57 : 28,198.39 = 11,796.54 : x
  2. Step 2: Convert to fraction form
    18,811.57/28,198.39 = 11,796.54/x
  3. Step 3: Cross multiply
    18,811.57x = 28,198.39 × 11,796.54
  4. Step 4: Simplify right side
    18,811.57x = 332,643,435.57
  5. Step 5: Solve for x
    x = 332,643,435.57/18,811.57
  6. Step 6: Final answer
    x = 17,682.92

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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.