Home / 20,221.44-27,905.70-11,728.60

Finding the Fourth Proportional to 20,221.44, 27,905.70 and 11,728.60

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Solution

The fourth proportional to 20,221.44, 27,905.70 and 11,728.60 is: 16,185.53

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,221.44 : 27,905.70 = 11,728.60 : x
  2. Step 2: Convert to fraction form
    20,221.44/27,905.70 = 11,728.60/x
  3. Step 3: Cross multiply
    20,221.44x = 27,905.70 × 11,728.60
  4. Step 4: Simplify right side
    20,221.44x = 327,294,723.26
  5. Step 5: Solve for x
    x = 327,294,723.26/20,221.44
  6. Step 6: Final answer
    x = 16,185.53

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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.