Home / 18,691.44-28,007.82-11,751.36

Finding the Fourth Proportional to 18,691.44, 28,007.82 and 11,751.36

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Solution

The fourth proportional to 18,691.44, 28,007.82 and 11,751.36 is: 17,608.59

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,691.44 : 28,007.82 = 11,751.36 : x
  2. Step 2: Convert to fraction form
    18,691.44/28,007.82 = 11,751.36/x
  3. Step 3: Cross multiply
    18,691.44x = 28,007.82 × 11,751.36
  4. Step 4: Simplify right side
    18,691.44x = 329,129,975.64
  5. Step 5: Solve for x
    x = 329,129,975.64/18,691.44
  6. Step 6: Final answer
    x = 17,608.59

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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.