Home / 27,879.22-38,472.46-15,131.80

Finding the Fourth Proportional to 27,879.22, 38,472.46 and 15,131.80

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Solution

The fourth proportional to 27,879.22, 38,472.46 and 15,131.80 is: 20,881.42

Step by Step Solution

  1. Step 1: Write the proportion equation
    27,879.22 : 38,472.46 = 15,131.80 : x
  2. Step 2: Convert to fraction form
    27,879.22/38,472.46 = 15,131.80/x
  3. Step 3: Cross multiply
    27,879.22x = 38,472.46 × 15,131.80
  4. Step 4: Simplify right side
    27,879.22x = 582,157,570.23
  5. Step 5: Solve for x
    x = 582,157,570.23/27,879.22
  6. Step 6: Final answer
    x = 20,881.42

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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.