Home / 20,076.55-27,704.90-11,579.03

Finding the Fourth Proportional to 20,076.55, 27,704.90 and 11,579.03

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Solution

The fourth proportional to 20,076.55, 27,704.90 and 11,579.03 is: 15,978.64

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,076.55 : 27,704.90 = 11,579.03 : x
  2. Step 2: Convert to fraction form
    20,076.55/27,704.90 = 11,579.03/x
  3. Step 3: Cross multiply
    20,076.55x = 27,704.90 × 11,579.03
  4. Step 4: Simplify right side
    20,076.55x = 320,795,868.25
  5. Step 5: Solve for x
    x = 320,795,868.25/20,076.55
  6. Step 6: Final answer
    x = 15,978.64

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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.