Home / 10,939.09-16,409.36-3,147.97

Finding the Fourth Proportional to 10,939.09, 16,409.36 and 3,147.97

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Solution

The fourth proportional to 10,939.09, 16,409.36 and 3,147.97 is: 4,722.16

Step by Step Solution

  1. Step 1: Write the proportion equation
    10,939.09 : 16,409.36 = 3,147.97 : x
  2. Step 2: Convert to fraction form
    10,939.09/16,409.36 = 3,147.97/x
  3. Step 3: Cross multiply
    10,939.09x = 16,409.36 × 3,147.97
  4. Step 4: Simplify right side
    10,939.09x = 51,656,157.26
  5. Step 5: Solve for x
    x = 51,656,157.26/10,939.09
  6. Step 6: Final answer
    x = 4,722.16

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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.