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Finding the Fourth Proportional to 15,964.72, 22,030.84 and 8,891

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Solution

The fourth proportional to 15,964.72, 22,030.84 and 8,891 is: 12,269.32

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,964.72 : 22,030.84 = 8,891 : x
  2. Step 2: Convert to fraction form
    15,964.72/22,030.84 = 8,891/x
  3. Step 3: Cross multiply
    15,964.72x = 22,030.84 × 8,891
  4. Step 4: Simplify right side
    15,964.72x = 195,876,198.44
  5. Step 5: Solve for x
    x = 195,876,198.44/15,964.72
  6. Step 6: Final answer
    x = 12,269.32

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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.