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Finding the Fourth Proportional to 29,143.80, 43,737.30 and 21,367.80

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Solution

The fourth proportional to 29,143.80, 43,737.30 and 21,367.80 is: 32,067.54

Step by Step Solution

  1. Step 1: Write the proportion equation
    29,143.80 : 43,737.30 = 21,367.80 : x
  2. Step 2: Convert to fraction form
    29,143.80/43,737.30 = 21,367.80/x
  3. Step 3: Cross multiply
    29,143.80x = 43,737.30 × 21,367.80
  4. Step 4: Simplify right side
    29,143.80x = 934,569,878.94
  5. Step 5: Solve for x
    x = 934,569,878.94/29,143.80
  6. Step 6: Final answer
    x = 32,067.54

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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.