Home / 13,671.88-20,507.46-3,811.84

Finding the Fourth Proportional to 13,671.88, 20,507.46 and 3,811.84

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Solution

The fourth proportional to 13,671.88, 20,507.46 and 3,811.84 is: 5,717.66

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,671.88 : 20,507.46 = 3,811.84 : x
  2. Step 2: Convert to fraction form
    13,671.88/20,507.46 = 3,811.84/x
  3. Step 3: Cross multiply
    13,671.88x = 20,507.46 × 3,811.84
  4. Step 4: Simplify right side
    13,671.88x = 78,171,156.33
  5. Step 5: Solve for x
    x = 78,171,156.33/13,671.88
  6. Step 6: Final answer
    x = 5,717.66

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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.