Home / 18,791.09-28,187.10-6,311.55

Finding the Fourth Proportional to 18,791.09, 28,187.10 and 6,311.55

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Solution

The fourth proportional to 18,791.09, 28,187.10 and 6,311.55 is: 9,467.48

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,791.09 : 28,187.10 = 6,311.55 : x
  2. Step 2: Convert to fraction form
    18,791.09/28,187.10 = 6,311.55/x
  3. Step 3: Cross multiply
    18,791.09x = 28,187.10 × 6,311.55
  4. Step 4: Simplify right side
    18,791.09x = 177,904,291.01
  5. Step 5: Solve for x
    x = 177,904,291.01/18,791.09
  6. Step 6: Final answer
    x = 9,467.48

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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.