Home / 13,481.36-18,602.72-8,103.20

Finding the Fourth Proportional to 13,481.36, 18,602.72 and 8,103.20

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Solution

The fourth proportional to 13,481.36, 18,602.72 and 8,103.20 is: 11,181.48

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,481.36 : 18,602.72 = 8,103.20 : x
  2. Step 2: Convert to fraction form
    13,481.36/18,602.72 = 8,103.20/x
  3. Step 3: Cross multiply
    13,481.36x = 18,602.72 × 8,103.20
  4. Step 4: Simplify right side
    13,481.36x = 150,741,560.70
  5. Step 5: Solve for x
    x = 150,741,560.70/13,481.36
  6. Step 6: Final answer
    x = 11,181.48

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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.