Home / 18,791.38-28,189.50-5,645.08

Finding the Fourth Proportional to 18,791.38, 28,189.50 and 5,645.08

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Solution

The fourth proportional to 18,791.38, 28,189.50 and 5,645.08 is: 8,468.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,791.38 : 28,189.50 = 5,645.08 : x
  2. Step 2: Convert to fraction form
    18,791.38/28,189.50 = 5,645.08/x
  3. Step 3: Cross multiply
    18,791.38x = 28,189.50 × 5,645.08
  4. Step 4: Simplify right side
    18,791.38x = 159,131,982.66
  5. Step 5: Solve for x
    x = 159,131,982.66/18,791.38
  6. Step 6: Final answer
    x = 8,468.35

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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.