Home / 13,383.52-18,469.89-8,078.22

Finding the Fourth Proportional to 13,383.52, 18,469.89 and 8,078.22

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Solution

The fourth proportional to 13,383.52, 18,469.89 and 8,078.22 is: 11,148.33

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,383.52 : 18,469.89 = 8,078.22 : x
  2. Step 2: Convert to fraction form
    13,383.52/18,469.89 = 8,078.22/x
  3. Step 3: Cross multiply
    13,383.52x = 18,469.89 × 8,078.22
  4. Step 4: Simplify right side
    13,383.52x = 149,203,834.80
  5. Step 5: Solve for x
    x = 149,203,834.80/13,383.52
  6. Step 6: Final answer
    x = 11,148.33

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.