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Finding the Fourth Proportional to 12,091.36, 18,142.74 and 5,847.84

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Solution

The fourth proportional to 12,091.36, 18,142.74 and 5,847.84 is: 8,774.52

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,091.36 : 18,142.74 = 5,847.84 : x
  2. Step 2: Convert to fraction form
    12,091.36/18,142.74 = 5,847.84/x
  3. Step 3: Cross multiply
    12,091.36x = 18,142.74 × 5,847.84
  4. Step 4: Simplify right side
    12,091.36x = 106,095,840.68
  5. Step 5: Solve for x
    x = 106,095,840.68/12,091.36
  6. Step 6: Final answer
    x = 8,774.52

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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.