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Finding the Fourth Proportional to 11,887.08, 17,801.45 and 7,979.64

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Solution

The fourth proportional to 11,887.08, 17,801.45 and 7,979.64 is: 11,949.88

Step by Step Solution

  1. Step 1: Write the proportion equation
    11,887.08 : 17,801.45 = 7,979.64 : x
  2. Step 2: Convert to fraction form
    11,887.08/17,801.45 = 7,979.64/x
  3. Step 3: Cross multiply
    11,887.08x = 17,801.45 × 7,979.64
  4. Step 4: Simplify right side
    11,887.08x = 142,049,162.48
  5. Step 5: Solve for x
    x = 142,049,162.48/11,887.08
  6. Step 6: Final answer
    x = 11,949.88

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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.