Home / 20,087.94-27,720.92-11,135.37

Finding the Fourth Proportional to 20,087.94, 27,720.92 and 11,135.37

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Solution

The fourth proportional to 20,087.94, 27,720.92 and 11,135.37 is: 15,366.57

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,087.94 : 27,720.92 = 11,135.37 : x
  2. Step 2: Convert to fraction form
    20,087.94/27,720.92 = 11,135.37/x
  3. Step 3: Cross multiply
    20,087.94x = 27,720.92 × 11,135.37
  4. Step 4: Simplify right side
    20,087.94x = 308,682,645.26
  5. Step 5: Solve for x
    x = 308,682,645.26/20,087.94
  6. Step 6: Final answer
    x = 15,366.57

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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.