Home / 13,791.06-20,723.40-12,076.80

Finding the Fourth Proportional to 13,791.06, 20,723.40 and 12,076.80

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Solution

The fourth proportional to 13,791.06, 20,723.40 and 12,076.80 is: 18,147.43

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,791.06 : 20,723.40 = 12,076.80 : x
  2. Step 2: Convert to fraction form
    13,791.06/20,723.40 = 12,076.80/x
  3. Step 3: Cross multiply
    13,791.06x = 20,723.40 × 12,076.80
  4. Step 4: Simplify right side
    13,791.06x = 250,272,357.12
  5. Step 5: Solve for x
    x = 250,272,357.12/13,791.06
  6. Step 6: Final answer
    x = 18,147.43

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.