Home / 12,939.05-19,408.56-4,054.44

Finding the Fourth Proportional to 12,939.05, 19,408.56 and 4,054.44

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Solution

The fourth proportional to 12,939.05, 19,408.56 and 4,054.44 is: 6,081.66

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,939.05 : 19,408.56 = 4,054.44 : x
  2. Step 2: Convert to fraction form
    12,939.05/19,408.56 = 4,054.44/x
  3. Step 3: Cross multiply
    12,939.05x = 19,408.56 × 4,054.44
  4. Step 4: Simplify right side
    12,939.05x = 78,690,842.01
  5. Step 5: Solve for x
    x = 78,690,842.01/12,939.05
  6. Step 6: Final answer
    x = 6,081.66

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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.