Home / 18,081.09-27,139.14-8,727.68

Finding the Fourth Proportional to 18,081.09, 27,139.14 and 8,727.68

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Solution

The fourth proportional to 18,081.09, 27,139.14 and 8,727.68 is: 13,099.97

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,081.09 : 27,139.14 = 8,727.68 : x
  2. Step 2: Convert to fraction form
    18,081.09/27,139.14 = 8,727.68/x
  3. Step 3: Cross multiply
    18,081.09x = 27,139.14 × 8,727.68
  4. Step 4: Simplify right side
    18,081.09x = 236,861,729.40
  5. Step 5: Solve for x
    x = 236,861,729.40/18,081.09
  6. Step 6: Final answer
    x = 13,099.97

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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.