Home / 10,781.94-16,174.76-4,939.05

Finding the Fourth Proportional to 10,781.94, 16,174.76 and 4,939.05

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Solution

The fourth proportional to 10,781.94, 16,174.76 and 4,939.05 is: 7,409.42

Step by Step Solution

  1. Step 1: Write the proportion equation
    10,781.94 : 16,174.76 = 4,939.05 : x
  2. Step 2: Convert to fraction form
    10,781.94/16,174.76 = 4,939.05/x
  3. Step 3: Cross multiply
    10,781.94x = 16,174.76 × 4,939.05
  4. Step 4: Simplify right side
    10,781.94x = 79,887,923.68
  5. Step 5: Solve for x
    x = 79,887,923.68/10,781.94
  6. Step 6: Final answer
    x = 7,409.42

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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.