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Finding the Fourth Proportional to 18,290.14, 25,224.57 and 11,914.31

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Solution

The fourth proportional to 18,290.14, 25,224.57 and 11,914.31 is: 16,431.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,290.14 : 25,224.57 = 11,914.31 : x
  2. Step 2: Convert to fraction form
    18,290.14/25,224.57 = 11,914.31/x
  3. Step 3: Cross multiply
    18,290.14x = 25,224.57 × 11,914.31
  4. Step 4: Simplify right side
    18,290.14x = 300,533,409.66
  5. Step 5: Solve for x
    x = 300,533,409.66/18,290.14
  6. Step 6: Final answer
    x = 16,431.45

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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.