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Finding the Fourth Proportional to 21,676.74, 32,569.83 and 20,801.94

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Solution

The fourth proportional to 21,676.74, 32,569.83 and 20,801.94 is: 31,255.42

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,676.74 : 32,569.83 = 20,801.94 : x
  2. Step 2: Convert to fraction form
    21,676.74/32,569.83 = 20,801.94/x
  3. Step 3: Cross multiply
    21,676.74x = 32,569.83 × 20,801.94
  4. Step 4: Simplify right side
    21,676.74x = 677,515,649.47
  5. Step 5: Solve for x
    x = 677,515,649.47/21,676.74
  6. Step 6: Final answer
    x = 31,255.42

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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.