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Finding the Fourth Proportional to 18,194.34, 25,104.42 and 10,639.20

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Solution

The fourth proportional to 18,194.34, 25,104.42 and 10,639.20 is: 14,679.89

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,194.34 : 25,104.42 = 10,639.20 : x
  2. Step 2: Convert to fraction form
    18,194.34/25,104.42 = 10,639.20/x
  3. Step 3: Cross multiply
    18,194.34x = 25,104.42 × 10,639.20
  4. Step 4: Simplify right side
    18,194.34x = 267,090,945.26
  5. Step 5: Solve for x
    x = 267,090,945.26/18,194.34
  6. Step 6: Final answer
    x = 14,679.89

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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.