Home / 12,977.29-19,467.21-3,489.49

Finding the Fourth Proportional to 12,977.29, 19,467.21 and 3,489.49

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Solution

The fourth proportional to 12,977.29, 19,467.21 and 3,489.49 is: 5,234.58

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,977.29 : 19,467.21 = 3,489.49 : x
  2. Step 2: Convert to fraction form
    12,977.29/19,467.21 = 3,489.49/x
  3. Step 3: Cross multiply
    12,977.29x = 19,467.21 × 3,489.49
  4. Step 4: Simplify right side
    12,977.29x = 67,930,634.62
  5. Step 5: Solve for x
    x = 67,930,634.62/12,977.29
  6. Step 6: Final answer
    x = 5,234.58

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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.