Home / 13,832.78-20,743.05-3,969.77

Finding the Fourth Proportional to 13,832.78, 20,743.05 and 3,969.77

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Solution

The fourth proportional to 13,832.78, 20,743.05 and 3,969.77 is: 5,952.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,832.78 : 20,743.05 = 3,969.77 : x
  2. Step 2: Convert to fraction form
    13,832.78/20,743.05 = 3,969.77/x
  3. Step 3: Cross multiply
    13,832.78x = 20,743.05 × 3,969.77
  4. Step 4: Simplify right side
    13,832.78x = 82,345,137.60
  5. Step 5: Solve for x
    x = 82,345,137.60/13,832.78
  6. Step 6: Final answer
    x = 5,952.90

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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.