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Finding the Fourth Proportional to 10,791.60, 16,194.60 and 6,111.60

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Solution

The fourth proportional to 10,791.60, 16,194.60 and 6,111.60 is: 9,171.48

Step by Step Solution

  1. Step 1: Write the proportion equation
    10,791.60 : 16,194.60 = 6,111.60 : x
  2. Step 2: Convert to fraction form
    10,791.60/16,194.60 = 6,111.60/x
  3. Step 3: Cross multiply
    10,791.60x = 16,194.60 × 6,111.60
  4. Step 4: Simplify right side
    10,791.60x = 98,974,917.36
  5. Step 5: Solve for x
    x = 98,974,917.36/10,791.60
  6. Step 6: Final answer
    x = 9,171.48

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These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.