Home / 18,381.75-25,367.01-9,998.43

Finding the Fourth Proportional to 18,381.75, 25,367.01 and 9,998.43

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Solution

The fourth proportional to 18,381.75, 25,367.01 and 9,998.43 is: 13,797.94

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,381.75 : 25,367.01 = 9,998.43 : x
  2. Step 2: Convert to fraction form
    18,381.75/25,367.01 = 9,998.43/x
  3. Step 3: Cross multiply
    18,381.75x = 25,367.01 × 9,998.43
  4. Step 4: Simplify right side
    18,381.75x = 253,630,273.79
  5. Step 5: Solve for x
    x = 253,630,273.79/18,381.75
  6. Step 6: Final answer
    x = 13,797.94

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Half scale
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Similar ratio
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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.