Home / 18,198.44-25,118.59-11,130.78

Finding the Fourth Proportional to 18,198.44, 25,118.59 and 11,130.78

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Solution

The fourth proportional to 18,198.44, 25,118.59 and 11,130.78 is: 15,363.38

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,198.44 : 25,118.59 = 11,130.78 : x
  2. Step 2: Convert to fraction form
    18,198.44/25,118.59 = 11,130.78/x
  3. Step 3: Cross multiply
    18,198.44x = 25,118.59 × 11,130.78
  4. Step 4: Simplify right side
    18,198.44x = 279,589,499.20
  5. Step 5: Solve for x
    x = 279,589,499.20/18,198.44
  6. Step 6: Final answer
    x = 15,363.38

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Half scale
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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.