Home / 13,425.31-20,133.17-5,103.11

Finding the Fourth Proportional to 13,425.31, 20,133.17 and 5,103.11

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Solution

The fourth proportional to 13,425.31, 20,133.17 and 5,103.11 is: 7,652.84

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,425.31 : 20,133.17 = 5,103.11 : x
  2. Step 2: Convert to fraction form
    13,425.31/20,133.17 = 5,103.11/x
  3. Step 3: Cross multiply
    13,425.31x = 20,133.17 × 5,103.11
  4. Step 4: Simplify right side
    13,425.31x = 102,741,654.98
  5. Step 5: Solve for x
    x = 102,741,654.98/13,425.31
  6. Step 6: Final answer
    x = 7,652.84

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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.