Home / 11,139.54-16,707.48-4,122.87

Finding the Fourth Proportional to 11,139.54, 16,707.48 and 4,122.87

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Solution

The fourth proportional to 11,139.54, 16,707.48 and 4,122.87 is: 6,183.63

Step by Step Solution

  1. Step 1: Write the proportion equation
    11,139.54 : 16,707.48 = 4,122.87 : x
  2. Step 2: Convert to fraction form
    11,139.54/16,707.48 = 4,122.87/x
  3. Step 3: Cross multiply
    11,139.54x = 16,707.48 × 4,122.87
  4. Step 4: Simplify right side
    11,139.54x = 68,882,768.07
  5. Step 5: Solve for x
    x = 68,882,768.07/11,139.54
  6. Step 6: Final answer
    x = 6,183.63

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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.