Home / 27,819.70-38,443.59-21,092.86

Finding the Fourth Proportional to 27,819.70, 38,443.59 and 21,092.86

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Solution

The fourth proportional to 27,819.70, 38,443.59 and 21,092.86 is: 29,147.87

Step by Step Solution

  1. Step 1: Write the proportion equation
    27,819.70 : 38,443.59 = 21,092.86 : x
  2. Step 2: Convert to fraction form
    27,819.70/38,443.59 = 21,092.86/x
  3. Step 3: Cross multiply
    27,819.70x = 38,443.59 × 21,092.86
  4. Step 4: Simplify right side
    27,819.70x = 810,885,034.25
  5. Step 5: Solve for x
    x = 810,885,034.25/27,819.70
  6. Step 6: Final answer
    x = 29,147.87

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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.