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Finding the Fourth Proportional to 11,999.64, 17,979.21 and 7,833.54

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Solution

The fourth proportional to 11,999.64, 17,979.21 and 7,833.54 is: 11,737.09

Step by Step Solution

  1. Step 1: Write the proportion equation
    11,999.64 : 17,979.21 = 7,833.54 : x
  2. Step 2: Convert to fraction form
    11,999.64/17,979.21 = 7,833.54/x
  3. Step 3: Cross multiply
    11,999.64x = 17,979.21 × 7,833.54
  4. Step 4: Simplify right side
    11,999.64x = 140,840,860.70
  5. Step 5: Solve for x
    x = 140,840,860.70/11,999.64
  6. Step 6: Final answer
    x = 11,737.09

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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.