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Finding the Fourth Proportional to 18,791.15, 25,930.78 and 10,292.83

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Solution

The fourth proportional to 18,791.15, 25,930.78 and 10,292.83 is: 14,203.56

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,791.15 : 25,930.78 = 10,292.83 : x
  2. Step 2: Convert to fraction form
    18,791.15/25,930.78 = 10,292.83/x
  3. Step 3: Cross multiply
    18,791.15x = 25,930.78 × 10,292.83
  4. Step 4: Simplify right side
    18,791.15x = 266,901,155.59
  5. Step 5: Solve for x
    x = 266,901,155.59/18,791.15
  6. Step 6: Final answer
    x = 14,203.56

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These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.