Home / 11,990.52-17,987.40-4,198.32

Finding the Fourth Proportional to 11,990.52, 17,987.40 and 4,198.32

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Solution

The fourth proportional to 11,990.52, 17,987.40 and 4,198.32 is: 6,298.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    11,990.52 : 17,987.40 = 4,198.32 : x
  2. Step 2: Convert to fraction form
    11,990.52/17,987.40 = 4,198.32/x
  3. Step 3: Cross multiply
    11,990.52x = 17,987.40 × 4,198.32
  4. Step 4: Simplify right side
    11,990.52x = 75,516,861.17
  5. Step 5: Solve for x
    x = 75,516,861.17/11,990.52
  6. Step 6: Final answer
    x = 6,298.05

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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.