Home / 20,125.56-27,773.60-11,173.64

Finding the Fourth Proportional to 20,125.56, 27,773.60 and 11,173.64

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Solution

The fourth proportional to 20,125.56, 27,773.60 and 11,173.64 is: 15,419.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,125.56 : 27,773.60 = 11,173.64 : x
  2. Step 2: Convert to fraction form
    20,125.56/27,773.60 = 11,173.64/x
  3. Step 3: Cross multiply
    20,125.56x = 27,773.60 × 11,173.64
  4. Step 4: Simplify right side
    20,125.56x = 310,332,207.90
  5. Step 5: Solve for x
    x = 310,332,207.90/20,125.56
  6. Step 6: Final answer
    x = 15,419.80

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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.