Home / 20,079.09-27,708.39-11,581.57

Finding the Fourth Proportional to 20,079.09, 27,708.39 and 11,581.57

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Solution

The fourth proportional to 20,079.09, 27,708.39 and 11,581.57 is: 15,982.13

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,079.09 : 27,708.39 = 11,581.57 : x
  2. Step 2: Convert to fraction form
    20,079.09/27,708.39 = 11,581.57/x
  3. Step 3: Cross multiply
    20,079.09x = 27,708.39 × 11,581.57
  4. Step 4: Simplify right side
    20,079.09x = 320,906,658.37
  5. Step 5: Solve for x
    x = 320,906,658.37/20,079.09
  6. Step 6: Final answer
    x = 15,982.13

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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.