Home / 11,939.35-17,909.10-3,174.19

Finding the Fourth Proportional to 11,939.35, 17,909.10 and 3,174.19

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Solution

The fourth proportional to 11,939.35, 17,909.10 and 3,174.19 is: 4,761.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    11,939.35 : 17,909.10 = 3,174.19 : x
  2. Step 2: Convert to fraction form
    11,939.35/17,909.10 = 3,174.19/x
  3. Step 3: Cross multiply
    11,939.35x = 17,909.10 × 3,174.19
  4. Step 4: Simplify right side
    11,939.35x = 56,846,841.36
  5. Step 5: Solve for x
    x = 56,846,841.36/11,939.35
  6. Step 6: Final answer
    x = 4,761.30

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1.5x scale

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.