Home / 13,676.85-20,513.25-3,815.37

Finding the Fourth Proportional to 13,676.85, 20,513.25 and 3,815.37

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Solution

The fourth proportional to 13,676.85, 20,513.25 and 3,815.37 is: 5,722.49

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,676.85 : 20,513.25 = 3,815.37 : x
  2. Step 2: Convert to fraction form
    13,676.85/20,513.25 = 3,815.37/x
  3. Step 3: Cross multiply
    13,676.85x = 20,513.25 × 3,815.37
  4. Step 4: Simplify right side
    13,676.85x = 78,265,638.65
  5. Step 5: Solve for x
    x = 78,265,638.65/13,676.85
  6. Step 6: Final answer
    x = 5,722.49

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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.