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Finding the Fourth Proportional to 18,491.92, 25,518.72 and 10,108.44

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Solution

The fourth proportional to 18,491.92, 25,518.72 and 10,108.44 is: 13,949.58

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,491.92 : 25,518.72 = 10,108.44 : x
  2. Step 2: Convert to fraction form
    18,491.92/25,518.72 = 10,108.44/x
  3. Step 3: Cross multiply
    18,491.92x = 25,518.72 × 10,108.44
  4. Step 4: Simplify right side
    18,491.92x = 257,954,450.00
  5. Step 5: Solve for x
    x = 257,954,450.00/18,491.92
  6. Step 6: Final answer
    x = 13,949.58

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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.