Home / 18,517.88-27,782.58-5,372.12

Finding the Fourth Proportional to 18,517.88, 27,782.58 and 5,372.12

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Solution

The fourth proportional to 18,517.88, 27,782.58 and 5,372.12 is: 8,059.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,517.88 : 27,782.58 = 5,372.12 : x
  2. Step 2: Convert to fraction form
    18,517.88/27,782.58 = 5,372.12/x
  3. Step 3: Cross multiply
    18,517.88x = 27,782.58 × 5,372.12
  4. Step 4: Simplify right side
    18,517.88x = 149,251,353.67
  5. Step 5: Solve for x
    x = 149,251,353.67/18,517.88
  6. Step 6: Final answer
    x = 8,059.85

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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.