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Finding the Fourth Proportional to 15,964.89, 22,030.97 and 8,891.97

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Solution

The fourth proportional to 15,964.89, 22,030.97 and 8,891.97 is: 12,270.59

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,964.89 : 22,030.97 = 8,891.97 : x
  2. Step 2: Convert to fraction form
    15,964.89/22,030.97 = 8,891.97/x
  3. Step 3: Cross multiply
    15,964.89x = 22,030.97 × 8,891.97
  4. Step 4: Simplify right side
    15,964.89x = 195,898,679.85
  5. Step 5: Solve for x
    x = 195,898,679.85/15,964.89
  6. Step 6: Final answer
    x = 12,270.59

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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.