Home / 18,727.41-28,091.25-4,687.68

Finding the Fourth Proportional to 18,727.41, 28,091.25 and 4,687.68

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Solution

The fourth proportional to 18,727.41, 28,091.25 and 4,687.68 is: 7,031.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,727.41 : 28,091.25 = 4,687.68 : x
  2. Step 2: Convert to fraction form
    18,727.41/28,091.25 = 4,687.68/x
  3. Step 3: Cross multiply
    18,727.41x = 28,091.25 × 4,687.68
  4. Step 4: Simplify right side
    18,727.41x = 131,682,790.80
  5. Step 5: Solve for x
    x = 131,682,790.80/18,727.41
  6. Step 6: Final answer
    x = 7,031.55

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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.