Home / 13,613.73-20,420.69-3,753.54

Finding the Fourth Proportional to 13,613.73, 20,420.69 and 3,753.54

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Solution

The fourth proportional to 13,613.73, 20,420.69 and 3,753.54 is: 5,630.34

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,613.73 : 20,420.69 = 3,753.54 : x
  2. Step 2: Convert to fraction form
    13,613.73/20,420.69 = 3,753.54/x
  3. Step 3: Cross multiply
    13,613.73x = 20,420.69 × 3,753.54
  4. Step 4: Simplify right side
    13,613.73x = 76,649,857.97
  5. Step 5: Solve for x
    x = 76,649,857.97/13,613.73
  6. Step 6: Final answer
    x = 5,630.34

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1.5x scale

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.