Home / 20,131.53-27,777.03-12,173.58

Finding the Fourth Proportional to 20,131.53, 27,777.03 and 12,173.58

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Solution

The fourth proportional to 20,131.53, 27,777.03 and 12,173.58 is: 16,796.83

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,131.53 : 27,777.03 = 12,173.58 : x
  2. Step 2: Convert to fraction form
    20,131.53/27,777.03 = 12,173.58/x
  3. Step 3: Cross multiply
    20,131.53x = 27,777.03 × 12,173.58
  4. Step 4: Simplify right side
    20,131.53x = 338,145,896.87
  5. Step 5: Solve for x
    x = 338,145,896.87/20,131.53
  6. Step 6: Final answer
    x = 16,796.83

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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.