Home / 11,187.36-16,780.32-2,979.36

Finding the Fourth Proportional to 11,187.36, 16,780.32 and 2,979.36

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Solution

The fourth proportional to 11,187.36, 16,780.32 and 2,979.36 is: 4,468.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    11,187.36 : 16,780.32 = 2,979.36 : x
  2. Step 2: Convert to fraction form
    11,187.36/16,780.32 = 2,979.36/x
  3. Step 3: Cross multiply
    11,187.36x = 16,780.32 × 2,979.36
  4. Step 4: Simplify right side
    11,187.36x = 49,994,614.20
  5. Step 5: Solve for x
    x = 49,994,614.20/11,187.36
  6. Step 6: Final answer
    x = 4,468.85

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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.