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Finding the Fourth Proportional to 33,887, 46,764.08 and 20,639

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Solution

The fourth proportional to 33,887, 46,764.08 and 20,639 is: 28,481.83

Step by Step Solution

  1. Step 1: Write the proportion equation
    33,887 : 46,764.08 = 20,639 : x
  2. Step 2: Convert to fraction form
    33,887/46,764.08 = 20,639/x
  3. Step 3: Cross multiply
    33,887x = 46,764.08 × 20,639
  4. Step 4: Simplify right side
    33,887x = 965,163,847.12
  5. Step 5: Solve for x
    x = 965,163,847.12/33,887
  6. Step 6: Final answer
    x = 28,481.83

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.