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Finding the Fourth Proportional to 28,791.93, 43,189.43 and 9,072.03

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Solution

The fourth proportional to 28,791.93, 43,189.43 and 9,072.03 is: 13,608.53

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,791.93 : 43,189.43 = 9,072.03 : x
  2. Step 2: Convert to fraction form
    28,791.93/43,189.43 = 9,072.03/x
  3. Step 3: Cross multiply
    28,791.93x = 43,189.43 × 9,072.03
  4. Step 4: Simplify right side
    28,791.93x = 391,815,804.64
  5. Step 5: Solve for x
    x = 391,815,804.64/28,791.93
  6. Step 6: Final answer
    x = 13,608.53

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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.