Home / 18,081.20-27,119.30-5,609.80

Finding the Fourth Proportional to 18,081.20, 27,119.30 and 5,609.80

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Solution

The fourth proportional to 18,081.20, 27,119.30 and 5,609.80 is: 8,413.92

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,081.20 : 27,119.30 = 5,609.80 : x
  2. Step 2: Convert to fraction form
    18,081.20/27,119.30 = 5,609.80/x
  3. Step 3: Cross multiply
    18,081.20x = 27,119.30 × 5,609.80
  4. Step 4: Simplify right side
    18,081.20x = 152,133,849.14
  5. Step 5: Solve for x
    x = 152,133,849.14/18,081.20
  6. Step 6: Final answer
    x = 8,413.92

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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.