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Finding the Fourth Proportional to 21,893.20, 32,844.66 and 8,751.76

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Solution

The fourth proportional to 21,893.20, 32,844.66 and 8,751.76 is: 13,129.58

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,893.20 : 32,844.66 = 8,751.76 : x
  2. Step 2: Convert to fraction form
    21,893.20/32,844.66 = 8,751.76/x
  3. Step 3: Cross multiply
    21,893.20x = 32,844.66 × 8,751.76
  4. Step 4: Simplify right side
    21,893.20x = 287,448,581.60
  5. Step 5: Solve for x
    x = 287,448,581.60/21,893.20
  6. Step 6: Final answer
    x = 13,129.58

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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.