Home / 18,321.94-25,278.69-11,245.78

Finding the Fourth Proportional to 18,321.94, 25,278.69 and 11,245.78

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Solution

The fourth proportional to 18,321.94, 25,278.69 and 11,245.78 is: 15,515.75

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,321.94 : 25,278.69 = 11,245.78 : x
  2. Step 2: Convert to fraction form
    18,321.94/25,278.69 = 11,245.78/x
  3. Step 3: Cross multiply
    18,321.94x = 25,278.69 × 11,245.78
  4. Step 4: Simplify right side
    18,321.94x = 284,278,586.43
  5. Step 5: Solve for x
    x = 284,278,586.43/18,321.94
  6. Step 6: Final answer
    x = 15,515.75

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Half scale
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Double 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.