Home / 13,768.38-20,652.77-3,907.68

Finding the Fourth Proportional to 13,768.38, 20,652.77 and 3,907.68

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Solution

The fourth proportional to 13,768.38, 20,652.77 and 3,907.68 is: 5,861.57

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,768.38 : 20,652.77 = 3,907.68 : x
  2. Step 2: Convert to fraction form
    13,768.38/20,652.77 = 3,907.68/x
  3. Step 3: Cross multiply
    13,768.38x = 20,652.77 × 3,907.68
  4. Step 4: Simplify right side
    13,768.38x = 80,704,348.59
  5. Step 5: Solve for x
    x = 80,704,348.59/13,768.38
  6. Step 6: Final answer
    x = 5,861.57

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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.