Home / 13,813.21-20,716.02-3,815.56

Finding the Fourth Proportional to 13,813.21, 20,716.02 and 3,815.56

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Solution

The fourth proportional to 13,813.21, 20,716.02 and 3,815.56 is: 5,722.29

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,813.21 : 20,716.02 = 3,815.56 : x
  2. Step 2: Convert to fraction form
    13,813.21/20,716.02 = 3,815.56/x
  3. Step 3: Cross multiply
    13,813.21x = 20,716.02 × 3,815.56
  4. Step 4: Simplify right side
    13,813.21x = 79,043,217.27
  5. Step 5: Solve for x
    x = 79,043,217.27/13,813.21
  6. Step 6: Final answer
    x = 5,722.29

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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.