Home / 13,676.20-20,515.46-3,815.50

Finding the Fourth Proportional to 13,676.20, 20,515.46 and 3,815.50

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Solution

The fourth proportional to 13,676.20, 20,515.46 and 3,815.50 is: 5,723.57

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,676.20 : 20,515.46 = 3,815.50 : x
  2. Step 2: Convert to fraction form
    13,676.20/20,515.46 = 3,815.50/x
  3. Step 3: Cross multiply
    13,676.20x = 20,515.46 × 3,815.50
  4. Step 4: Simplify right side
    13,676.20x = 78,276,737.63
  5. Step 5: Solve for x
    x = 78,276,737.63/13,676.20
  6. Step 6: Final answer
    x = 5,723.57

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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.