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Finding the Fourth Proportional to 28,793.71, 43,170.12 and 11,009.38

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Solution

The fourth proportional to 28,793.71, 43,170.12 and 11,009.38 is: 16,506.25

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,793.71 : 43,170.12 = 11,009.38 : x
  2. Step 2: Convert to fraction form
    28,793.71/43,170.12 = 11,009.38/x
  3. Step 3: Cross multiply
    28,793.71x = 43,170.12 × 11,009.38
  4. Step 4: Simplify right side
    28,793.71x = 475,276,255.73
  5. Step 5: Solve for x
    x = 475,276,255.73/28,793.71
  6. Step 6: Final answer
    x = 16,506.25

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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.