Home / 13,857.60-20,786.48-3,469.36

Finding the Fourth Proportional to 13,857.60, 20,786.48 and 3,469.36

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Solution

The fourth proportional to 13,857.60, 20,786.48 and 3,469.36 is: 5,204.06

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,857.60 : 20,786.48 = 3,469.36 : x
  2. Step 2: Convert to fraction form
    13,857.60/20,786.48 = 3,469.36/x
  3. Step 3: Cross multiply
    13,857.60x = 20,786.48 × 3,469.36
  4. Step 4: Simplify right side
    13,857.60x = 72,115,782.25
  5. Step 5: Solve for x
    x = 72,115,782.25/13,857.60
  6. Step 6: Final answer
    x = 5,204.06

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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.