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Finding the Fourth Proportional to 11,995.70, 17,991.51 and 3,228.66

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Solution

The fourth proportional to 11,995.70, 17,991.51 and 3,228.66 is: 4,842.44

Step by Step Solution

  1. Step 1: Write the proportion equation
    11,995.70 : 17,991.51 = 3,228.66 : x
  2. Step 2: Convert to fraction form
    11,995.70/17,991.51 = 3,228.66/x
  3. Step 3: Cross multiply
    11,995.70x = 17,991.51 × 3,228.66
  4. Step 4: Simplify right side
    11,995.70x = 58,088,468.68
  5. Step 5: Solve for x
    x = 58,088,468.68/11,995.70
  6. Step 6: Final answer
    x = 4,842.44

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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.