Home / 18,772.28-28,167.97-11,751.09

Finding the Fourth Proportional to 18,772.28, 28,167.97 and 11,751.09

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Solution

The fourth proportional to 18,772.28, 28,167.97 and 11,751.09 is: 17,632.61

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,772.28 : 28,167.97 = 11,751.09 : x
  2. Step 2: Convert to fraction form
    18,772.28/28,167.97 = 11,751.09/x
  3. Step 3: Cross multiply
    18,772.28x = 28,167.97 × 11,751.09
  4. Step 4: Simplify right side
    18,772.28x = 331,004,350.59
  5. Step 5: Solve for x
    x = 331,004,350.59/18,772.28
  6. Step 6: Final answer
    x = 17,632.61

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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.