Home / 18,379.20-27,555.84-7,993.92

Finding the Fourth Proportional to 18,379.20, 27,555.84 and 7,993.92

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Solution

The fourth proportional to 18,379.20, 27,555.84 and 7,993.92 is: 11,985.24

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,379.20 : 27,555.84 = 7,993.92 : x
  2. Step 2: Convert to fraction form
    18,379.20/27,555.84 = 7,993.92/x
  3. Step 3: Cross multiply
    18,379.20x = 27,555.84 × 7,993.92
  4. Step 4: Simplify right side
    18,379.20x = 220,279,180.49
  5. Step 5: Solve for x
    x = 220,279,180.49/18,379.20
  6. Step 6: Final answer
    x = 11,985.24

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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.