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Finding the Fourth Proportional to 11,293.58, 16,921.64 and 3,893.96

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Solution

The fourth proportional to 11,293.58, 16,921.64 and 3,893.96 is: 5,834.48

Step by Step Solution

  1. Step 1: Write the proportion equation
    11,293.58 : 16,921.64 = 3,893.96 : x
  2. Step 2: Convert to fraction form
    11,293.58/16,921.64 = 3,893.96/x
  3. Step 3: Cross multiply
    11,293.58x = 16,921.64 × 3,893.96
  4. Step 4: Simplify right side
    11,293.58x = 65,892,189.29
  5. Step 5: Solve for x
    x = 65,892,189.29/11,293.58
  6. Step 6: Final answer
    x = 5,834.48

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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.