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Finding the Fourth Proportional to 21,794.62, 30,083.01 and 12,845.02

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Solution

The fourth proportional to 21,794.62, 30,083.01 and 12,845.02 is: 17,729.92

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,794.62 : 30,083.01 = 12,845.02 : x
  2. Step 2: Convert to fraction form
    21,794.62/30,083.01 = 12,845.02/x
  3. Step 3: Cross multiply
    21,794.62x = 30,083.01 × 12,845.02
  4. Step 4: Simplify right side
    21,794.62x = 386,416,865.11
  5. Step 5: Solve for x
    x = 386,416,865.11/21,794.62
  6. Step 6: Final answer
    x = 17,729.92

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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.