Home / 20,823.84-28,736.94-11,392.44

Finding the Fourth Proportional to 20,823.84, 28,736.94 and 11,392.44

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Solution

The fourth proportional to 20,823.84, 28,736.94 and 11,392.44 is: 15,721.59

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,823.84 : 28,736.94 = 11,392.44 : x
  2. Step 2: Convert to fraction form
    20,823.84/28,736.94 = 11,392.44/x
  3. Step 3: Cross multiply
    20,823.84x = 28,736.94 × 11,392.44
  4. Step 4: Simplify right side
    20,823.84x = 327,383,864.73
  5. Step 5: Solve for x
    x = 327,383,864.73/20,823.84
  6. Step 6: Final answer
    x = 15,721.59

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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.