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Finding the Fourth Proportional to 11,993.71, 17,996.37 and 4,979.11

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Solution

The fourth proportional to 11,993.71, 17,996.37 and 4,979.11 is: 7,471.07

Step by Step Solution

  1. Step 1: Write the proportion equation
    11,993.71 : 17,996.37 = 4,979.11 : x
  2. Step 2: Convert to fraction form
    11,993.71/17,996.37 = 4,979.11/x
  3. Step 3: Cross multiply
    11,993.71x = 17,996.37 × 4,979.11
  4. Step 4: Simplify right side
    11,993.71x = 89,605,905.83
  5. Step 5: Solve for x
    x = 89,605,905.83/11,993.71
  6. Step 6: Final answer
    x = 7,471.07

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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.