Home / 27,687.12-38,194.92-18,122.79

Finding the Fourth Proportional to 27,687.12, 38,194.92 and 18,122.79

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Solution

The fourth proportional to 27,687.12, 38,194.92 and 18,122.79 is: 25,000.74

Step by Step Solution

  1. Step 1: Write the proportion equation
    27,687.12 : 38,194.92 = 18,122.79 : x
  2. Step 2: Convert to fraction form
    27,687.12/38,194.92 = 18,122.79/x
  3. Step 3: Cross multiply
    27,687.12x = 38,194.92 × 18,122.79
  4. Step 4: Simplify right side
    27,687.12x = 692,198,514.23
  5. Step 5: Solve for x
    x = 692,198,514.23/27,687.12
  6. Step 6: Final answer
    x = 25,000.74

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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.