Home / 13,613.20-20,512.43-11,202.10

Finding the Fourth Proportional to 13,613.20, 20,512.43 and 11,202.10

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Solution

The fourth proportional to 13,613.20, 20,512.43 and 11,202.10 is: 16,879.37

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,613.20 : 20,512.43 = 11,202.10 : x
  2. Step 2: Convert to fraction form
    13,613.20/20,512.43 = 11,202.10/x
  3. Step 3: Cross multiply
    13,613.20x = 20,512.43 × 11,202.10
  4. Step 4: Simplify right side
    13,613.20x = 229,782,292.10
  5. Step 5: Solve for x
    x = 229,782,292.10/13,613.20
  6. Step 6: Final answer
    x = 16,879.37

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.51) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.