Home / 18,786.75-28,184.45-6,474.75

Finding the Fourth Proportional to 18,786.75, 28,184.45 and 6,474.75

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Solution

The fourth proportional to 18,786.75, 28,184.45 and 6,474.75 is: 9,713.61

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,786.75 : 28,184.45 = 6,474.75 : x
  2. Step 2: Convert to fraction form
    18,786.75/28,184.45 = 6,474.75/x
  3. Step 3: Cross multiply
    18,786.75x = 28,184.45 × 6,474.75
  4. Step 4: Simplify right side
    18,786.75x = 182,487,235.26
  5. Step 5: Solve for x
    x = 182,487,235.26/18,786.75
  6. Step 6: Final answer
    x = 9,713.61

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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.