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Finding the Fourth Proportional to 26,893.80, 40,340.70 and 21,364.20

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Solution

The fourth proportional to 26,893.80, 40,340.70 and 21,364.20 is: 32,046.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    26,893.80 : 40,340.70 = 21,364.20 : x
  2. Step 2: Convert to fraction form
    26,893.80/40,340.70 = 21,364.20/x
  3. Step 3: Cross multiply
    26,893.80x = 40,340.70 × 21,364.20
  4. Step 4: Simplify right side
    26,893.80x = 861,846,782.94
  5. Step 5: Solve for x
    x = 861,846,782.94/26,893.80
  6. Step 6: Final answer
    x = 32,046.30

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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.