Home / 13,823.64-20,729.34-3,960.68

Finding the Fourth Proportional to 13,823.64, 20,729.34 and 3,960.68

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Solution

The fourth proportional to 13,823.64, 20,729.34 and 3,960.68 is: 5,939.27

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,823.64 : 20,729.34 = 3,960.68 : x
  2. Step 2: Convert to fraction form
    13,823.64/20,729.34 = 3,960.68/x
  3. Step 3: Cross multiply
    13,823.64x = 20,729.34 × 3,960.68
  4. Step 4: Simplify right side
    13,823.64x = 82,102,282.35
  5. Step 5: Solve for x
    x = 82,102,282.35/13,823.64
  6. Step 6: Final answer
    x = 5,939.27

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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.