Home / 27,853.74-38,443.46-21,791.90

Finding the Fourth Proportional to 27,853.74, 38,443.46 and 21,791.90

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Solution

The fourth proportional to 27,853.74, 38,443.46 and 21,791.90 is: 30,076.97

Step by Step Solution

  1. Step 1: Write the proportion equation
    27,853.74 : 38,443.46 = 21,791.90 : x
  2. Step 2: Convert to fraction form
    27,853.74/38,443.46 = 21,791.90/x
  3. Step 3: Cross multiply
    27,853.74x = 38,443.46 × 21,791.90
  4. Step 4: Simplify right side
    27,853.74x = 837,756,035.97
  5. Step 5: Solve for x
    x = 837,756,035.97/27,853.74
  6. Step 6: Final answer
    x = 30,076.97

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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.