Home / 12,249.64-18,379.70-3,930.36

Finding the Fourth Proportional to 12,249.64, 18,379.70 and 3,930.36

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Solution

The fourth proportional to 12,249.64, 18,379.70 and 3,930.36 is: 5,897.22

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,249.64 : 18,379.70 = 3,930.36 : x
  2. Step 2: Convert to fraction form
    12,249.64/18,379.70 = 3,930.36/x
  3. Step 3: Cross multiply
    12,249.64x = 18,379.70 × 3,930.36
  4. Step 4: Simplify right side
    12,249.64x = 72,238,837.69
  5. Step 5: Solve for x
    x = 72,238,837.69/12,249.64
  6. Step 6: Final answer
    x = 5,897.22

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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.