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Finding the Fourth Proportional to 28,866.86, 43,301.97 and 8,091.98

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Solution

The fourth proportional to 28,866.86, 43,301.97 and 8,091.98 is: 12,138.44

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,866.86 : 43,301.97 = 8,091.98 : x
  2. Step 2: Convert to fraction form
    28,866.86/43,301.97 = 8,091.98/x
  3. Step 3: Cross multiply
    28,866.86x = 43,301.97 × 8,091.98
  4. Step 4: Simplify right side
    28,866.86x = 350,398,675.20
  5. Step 5: Solve for x
    x = 350,398,675.20/28,866.86
  6. Step 6: Final answer
    x = 12,138.44

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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.