Home / 18,380.67-27,561.29-7,986.75

Finding the Fourth Proportional to 18,380.67, 27,561.29 and 7,986.75

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Solution

The fourth proportional to 18,380.67, 27,561.29 and 7,986.75 is: 11,975.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,380.67 : 27,561.29 = 7,986.75 : x
  2. Step 2: Convert to fraction form
    18,380.67/27,561.29 = 7,986.75/x
  3. Step 3: Cross multiply
    18,380.67x = 27,561.29 × 7,986.75
  4. Step 4: Simplify right side
    18,380.67x = 220,125,092.97
  5. Step 5: Solve for x
    x = 220,125,092.97/18,380.67
  6. Step 6: Final answer
    x = 11,975.90

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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.