Home / 20,163.36-27,839.28-12,612.96

Finding the Fourth Proportional to 20,163.36, 27,839.28 and 12,612.96

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Solution

The fourth proportional to 20,163.36, 27,839.28 and 12,612.96 is: 17,414.54

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,163.36 : 27,839.28 = 12,612.96 : x
  2. Step 2: Convert to fraction form
    20,163.36/27,839.28 = 12,612.96/x
  3. Step 3: Cross multiply
    20,163.36x = 27,839.28 × 12,612.96
  4. Step 4: Simplify right side
    20,163.36x = 351,135,725.07
  5. Step 5: Solve for x
    x = 351,135,725.07/20,163.36
  6. Step 6: Final answer
    x = 17,414.54

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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.