Home / 20,107.37-27,751.49-11,157.75

Finding the Fourth Proportional to 20,107.37, 27,751.49 and 11,157.75

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Solution

The fourth proportional to 20,107.37, 27,751.49 and 11,157.75 is: 15,399.54

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,107.37 : 27,751.49 = 11,157.75 : x
  2. Step 2: Convert to fraction form
    20,107.37/27,751.49 = 11,157.75/x
  3. Step 3: Cross multiply
    20,107.37x = 27,751.49 × 11,157.75
  4. Step 4: Simplify right side
    20,107.37x = 309,644,187.55
  5. Step 5: Solve for x
    x = 309,644,187.55/20,107.37
  6. Step 6: Final answer
    x = 15,399.54

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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.