Home / 20,174.56-27,839.40-11,221.64

Finding the Fourth Proportional to 20,174.56, 27,839.40 and 11,221.64

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Solution

The fourth proportional to 20,174.56, 27,839.40 and 11,221.64 is: 15,485.03

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,174.56 : 27,839.40 = 11,221.64 : x
  2. Step 2: Convert to fraction form
    20,174.56/27,839.40 = 11,221.64/x
  3. Step 3: Cross multiply
    20,174.56x = 27,839.40 × 11,221.64
  4. Step 4: Simplify right side
    20,174.56x = 312,403,724.62
  5. Step 5: Solve for x
    x = 312,403,724.62/20,174.56
  6. Step 6: Final answer
    x = 15,485.03

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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.