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Finding the Fourth Proportional to 13,425.52, 18,524.22 and 8,120.22

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Solution

The fourth proportional to 13,425.52, 18,524.22 and 8,120.22 is: 11,204.09

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,425.52 : 18,524.22 = 8,120.22 : x
  2. Step 2: Convert to fraction form
    13,425.52/18,524.22 = 8,120.22/x
  3. Step 3: Cross multiply
    13,425.52x = 18,524.22 × 8,120.22
  4. Step 4: Simplify right side
    13,425.52x = 150,420,741.73
  5. Step 5: Solve for x
    x = 150,420,741.73/13,425.52
  6. Step 6: Final answer
    x = 11,204.09

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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.