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Finding the Fourth Proportional to 15,867.03, 21,896.16 and 8,793.39

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Solution

The fourth proportional to 15,867.03, 21,896.16 and 8,793.39 is: 12,134.69

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,867.03 : 21,896.16 = 8,793.39 : x
  2. Step 2: Convert to fraction form
    15,867.03/21,896.16 = 8,793.39/x
  3. Step 3: Cross multiply
    15,867.03x = 21,896.16 × 8,793.39
  4. Step 4: Simplify right side
    15,867.03x = 192,541,474.38
  5. Step 5: Solve for x
    x = 192,541,474.38/15,867.03
  6. Step 6: Final answer
    x = 12,134.69

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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.