Home / 11,991.42-17,988.98-4,092.08

Finding the Fourth Proportional to 11,991.42, 17,988.98 and 4,092.08

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Solution

The fourth proportional to 11,991.42, 17,988.98 and 4,092.08 is: 6,138.75

Step by Step Solution

  1. Step 1: Write the proportion equation
    11,991.42 : 17,988.98 = 4,092.08 : x
  2. Step 2: Convert to fraction form
    11,991.42/17,988.98 = 4,092.08/x
  3. Step 3: Cross multiply
    11,991.42x = 17,988.98 × 4,092.08
  4. Step 4: Simplify right side
    11,991.42x = 73,612,345.28
  5. Step 5: Solve for x
    x = 73,612,345.28/11,991.42
  6. Step 6: Final answer
    x = 6,138.75

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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.