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Finding the Fourth Proportional to 21,793.80, 32,659.51 and 12,414.45

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Solution

The fourth proportional to 21,793.80, 32,659.51 and 12,414.45 is: 18,603.91

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,793.80 : 32,659.51 = 12,414.45 : x
  2. Step 2: Convert to fraction form
    21,793.80/32,659.51 = 12,414.45/x
  3. Step 3: Cross multiply
    21,793.80x = 32,659.51 × 12,414.45
  4. Step 4: Simplify right side
    21,793.80x = 405,449,791.85
  5. Step 5: Solve for x
    x = 405,449,791.85/21,793.80
  6. Step 6: Final answer
    x = 18,603.91

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.