Home / 17,213.75-25,796.39-13,688.09

Finding the Fourth Proportional to 17,213.75, 25,796.39 and 13,688.09

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Solution

The fourth proportional to 17,213.75, 25,796.39 and 13,688.09 is: 20,512.87

Step by Step Solution

  1. Step 1: Write the proportion equation
    17,213.75 : 25,796.39 = 13,688.09 : x
  2. Step 2: Convert to fraction form
    17,213.75/25,796.39 = 13,688.09/x
  3. Step 3: Cross multiply
    17,213.75x = 25,796.39 × 13,688.09
  4. Step 4: Simplify right side
    17,213.75x = 353,103,335.39
  5. Step 5: Solve for x
    x = 353,103,335.39/17,213.75
  6. Step 6: Final answer
    x = 20,512.87

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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.