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Finding the Fourth Proportional to 19,977.80, 29,958.92 and 7,491.01

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Solution

The fourth proportional to 19,977.80, 29,958.92 and 7,491.01 is: 11,233.59

Step by Step Solution

  1. Step 1: Write the proportion equation
    19,977.80 : 29,958.92 = 7,491.01 : x
  2. Step 2: Convert to fraction form
    19,977.80/29,958.92 = 7,491.01/x
  3. Step 3: Cross multiply
    19,977.80x = 29,958.92 × 7,491.01
  4. Step 4: Simplify right side
    19,977.80x = 224,422,456.96
  5. Step 5: Solve for x
    x = 224,422,456.96/19,977.80
  6. Step 6: Final answer
    x = 11,233.59

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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.