Home / 27,781.22-38,338.00-15,205.88

Finding the Fourth Proportional to 27,781.22, 38,338.00 and 15,205.88

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Solution

The fourth proportional to 27,781.22, 38,338.00 and 15,205.88 is: 20,984.06

Step by Step Solution

  1. Step 1: Write the proportion equation
    27,781.22 : 38,338.00 = 15,205.88 : x
  2. Step 2: Convert to fraction form
    27,781.22/38,338.00 = 15,205.88/x
  3. Step 3: Cross multiply
    27,781.22x = 38,338.00 × 15,205.88
  4. Step 4: Simplify right side
    27,781.22x = 582,962,797.74
  5. Step 5: Solve for x
    x = 582,962,797.74/27,781.22
  6. Step 6: Final answer
    x = 20,984.06

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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.