Home / 13,414.21-20,128.15-10,147.38

Finding the Fourth Proportional to 13,414.21, 20,128.15 and 10,147.38

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Solution

The fourth proportional to 13,414.21, 20,128.15 and 10,147.38 is: 15,226.23

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,414.21 : 20,128.15 = 10,147.38 : x
  2. Step 2: Convert to fraction form
    13,414.21/20,128.15 = 10,147.38/x
  3. Step 3: Cross multiply
    13,414.21x = 20,128.15 × 10,147.38
  4. Step 4: Simplify right side
    13,414.21x = 204,247,866.87
  5. Step 5: Solve for x
    x = 204,247,866.87/13,414.21
  6. Step 6: Final answer
    x = 15,226.23

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.