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Finding the Fourth Proportional to 11,939.92, 17,910.04 and 4,148.88

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Solution

The fourth proportional to 11,939.92, 17,910.04 and 4,148.88 is: 6,223.38

Step by Step Solution

  1. Step 1: Write the proportion equation
    11,939.92 : 17,910.04 = 4,148.88 : x
  2. Step 2: Convert to fraction form
    11,939.92/17,910.04 = 4,148.88/x
  3. Step 3: Cross multiply
    11,939.92x = 17,910.04 × 4,148.88
  4. Step 4: Simplify right side
    11,939.92x = 74,306,606.76
  5. Step 5: Solve for x
    x = 74,306,606.76/11,939.92
  6. Step 6: Final answer
    x = 6,223.38

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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.