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Finding the Fourth Proportional to 18,392.50, 25,379.90 and 10,324.31

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Solution

The fourth proportional to 18,392.50, 25,379.90 and 10,324.31 is: 14,246.56

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,392.50 : 25,379.90 = 10,324.31 : x
  2. Step 2: Convert to fraction form
    18,392.50/25,379.90 = 10,324.31/x
  3. Step 3: Cross multiply
    18,392.50x = 25,379.90 × 10,324.31
  4. Step 4: Simplify right side
    18,392.50x = 262,029,840.30
  5. Step 5: Solve for x
    x = 262,029,840.30/18,392.50
  6. Step 6: Final answer
    x = 14,246.56

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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.