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Finding the Fourth Proportional to 19,901.73, 29,849.28 and 7,418.44

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Solution

The fourth proportional to 19,901.73, 29,849.28 and 7,418.44 is: 11,126.42

Step by Step Solution

  1. Step 1: Write the proportion equation
    19,901.73 : 29,849.28 = 7,418.44 : x
  2. Step 2: Convert to fraction form
    19,901.73/29,849.28 = 7,418.44/x
  3. Step 3: Cross multiply
    19,901.73x = 29,849.28 × 7,418.44
  4. Step 4: Simplify right side
    19,901.73x = 221,434,996.91
  5. Step 5: Solve for x
    x = 221,434,996.91/19,901.73
  6. Step 6: Final answer
    x = 11,126.42

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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.