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Finding the Fourth Proportional to 18,791.88, 28,191.02 and 6,477

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Solution

The fourth proportional to 18,791.88, 28,191.02 and 6,477 is: 9,716.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,791.88 : 28,191.02 = 6,477 : x
  2. Step 2: Convert to fraction form
    18,791.88/28,191.02 = 6,477/x
  3. Step 3: Cross multiply
    18,791.88x = 28,191.02 × 6,477
  4. Step 4: Simplify right side
    18,791.88x = 182,593,236.54
  5. Step 5: Solve for x
    x = 182,593,236.54/18,791.88
  6. Step 6: Final answer
    x = 9,716.60

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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.