Home / 20,116.26-27,759.09-11,163.21

Finding the Fourth Proportional to 20,116.26, 27,759.09 and 11,163.21

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Solution

The fourth proportional to 20,116.26, 27,759.09 and 11,163.21 is: 15,404.48

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,116.26 : 27,759.09 = 11,163.21 : x
  2. Step 2: Convert to fraction form
    20,116.26/27,759.09 = 11,163.21/x
  3. Step 3: Cross multiply
    20,116.26x = 27,759.09 × 11,163.21
  4. Step 4: Simplify right side
    20,116.26x = 309,880,551.08
  5. Step 5: Solve for x
    x = 309,880,551.08/20,116.26
  6. Step 6: Final answer
    x = 15,404.48

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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.