Home / 13,758.21-20,640.81-6,367.98

Finding the Fourth Proportional to 13,758.21, 20,640.81 and 6,367.98

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Solution

The fourth proportional to 13,758.21, 20,640.81 and 6,367.98 is: 9,553.59

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,758.21 : 20,640.81 = 6,367.98 : x
  2. Step 2: Convert to fraction form
    13,758.21/20,640.81 = 6,367.98/x
  3. Step 3: Cross multiply
    13,758.21x = 20,640.81 × 6,367.98
  4. Step 4: Simplify right side
    13,758.21x = 131,440,265.26
  5. Step 5: Solve for x
    x = 131,440,265.26/13,758.21
  6. Step 6: Final answer
    x = 9,553.59

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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.