Home / 13,613.39-20,422.91-4,253.03

Finding the Fourth Proportional to 13,613.39, 20,422.91 and 4,253.03

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Solution

The fourth proportional to 13,613.39, 20,422.91 and 4,253.03 is: 6,380.42

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,613.39 : 20,422.91 = 4,253.03 : x
  2. Step 2: Convert to fraction form
    13,613.39/20,422.91 = 4,253.03/x
  3. Step 3: Cross multiply
    13,613.39x = 20,422.91 × 4,253.03
  4. Step 4: Simplify right side
    13,613.39x = 86,859,157.44
  5. Step 5: Solve for x
    x = 86,859,157.44/13,613.39
  6. Step 6: Final answer
    x = 6,380.42

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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.