Home / 27,686.82-38,207.26-15,111.66

Finding the Fourth Proportional to 27,686.82, 38,207.26 and 15,111.66

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Solution

The fourth proportional to 27,686.82, 38,207.26 and 15,111.66 is: 20,853.79

Step by Step Solution

  1. Step 1: Write the proportion equation
    27,686.82 : 38,207.26 = 15,111.66 : x
  2. Step 2: Convert to fraction form
    27,686.82/38,207.26 = 15,111.66/x
  3. Step 3: Cross multiply
    27,686.82x = 38,207.26 × 15,111.66
  4. Step 4: Simplify right side
    27,686.82x = 577,375,122.65
  5. Step 5: Solve for x
    x = 577,375,122.65/27,686.82
  6. Step 6: Final answer
    x = 20,853.79

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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.