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Finding the Fourth Proportional to 21,793.86, 30,076.11 and 12,363.84

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Solution

The fourth proportional to 21,793.86, 30,076.11 and 12,363.84 is: 17,062.43

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,793.86 : 30,076.11 = 12,363.84 : x
  2. Step 2: Convert to fraction form
    21,793.86/30,076.11 = 12,363.84/x
  3. Step 3: Cross multiply
    21,793.86x = 30,076.11 × 12,363.84
  4. Step 4: Simplify right side
    21,793.86x = 371,856,211.86
  5. Step 5: Solve for x
    x = 371,856,211.86/21,793.86
  6. Step 6: Final answer
    x = 17,062.43

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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.