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Finding the Fourth Proportional to 18,391.19, 25,405.46 and 17,708.43

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Solution

The fourth proportional to 18,391.19, 25,405.46 and 17,708.43 is: 24,462.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,391.19 : 25,405.46 = 17,708.43 : x
  2. Step 2: Convert to fraction form
    18,391.19/25,405.46 = 17,708.43/x
  3. Step 3: Cross multiply
    18,391.19x = 25,405.46 × 17,708.43
  4. Step 4: Simplify right side
    18,391.19x = 449,890,810.03
  5. Step 5: Solve for x
    x = 449,890,810.03/18,391.19
  6. Step 6: Final answer
    x = 24,462.30

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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.