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Finding the Fourth Proportional to 13,662.36, 18,858.78 and 8,073

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Solution

The fourth proportional to 13,662.36, 18,858.78 and 8,073 is: 11,143.53

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,662.36 : 18,858.78 = 8,073 : x
  2. Step 2: Convert to fraction form
    13,662.36/18,858.78 = 8,073/x
  3. Step 3: Cross multiply
    13,662.36x = 18,858.78 × 8,073
  4. Step 4: Simplify right side
    13,662.36x = 152,246,930.94
  5. Step 5: Solve for x
    x = 152,246,930.94/13,662.36
  6. Step 6: Final answer
    x = 11,143.53

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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.