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Finding the Fourth Proportional to 18,745.82, 25,869.21 and 10,247.99

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Solution

The fourth proportional to 18,745.82, 25,869.21 and 10,247.99 is: 14,142.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,745.82 : 25,869.21 = 10,247.99 : x
  2. Step 2: Convert to fraction form
    18,745.82/25,869.21 = 10,247.99/x
  3. Step 3: Cross multiply
    18,745.82x = 25,869.21 × 10,247.99
  4. Step 4: Simplify right side
    18,745.82x = 265,107,405.39
  5. Step 5: Solve for x
    x = 265,107,405.39/18,745.82
  6. Step 6: Final answer
    x = 14,142.21

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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.