Home / 13,872.93-20,811.42-5,107.11

Finding the Fourth Proportional to 13,872.93, 20,811.42 and 5,107.11

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Solution

The fourth proportional to 13,872.93, 20,811.42 and 5,107.11 is: 7,661.41

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,872.93 : 20,811.42 = 5,107.11 : x
  2. Step 2: Convert to fraction form
    13,872.93/20,811.42 = 5,107.11/x
  3. Step 3: Cross multiply
    13,872.93x = 20,811.42 × 5,107.11
  4. Step 4: Simplify right side
    13,872.93x = 106,286,211.20
  5. Step 5: Solve for x
    x = 106,286,211.20/13,872.93
  6. Step 6: Final answer
    x = 7,661.41

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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.