Home / 11,988.20-17,974.52-5,748.06

Finding the Fourth Proportional to 11,988.20, 17,974.52 and 5,748.06

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Solution

The fourth proportional to 11,988.20, 17,974.52 and 5,748.06 is: 8,618.36

Step by Step Solution

  1. Step 1: Write the proportion equation
    11,988.20 : 17,974.52 = 5,748.06 : x
  2. Step 2: Convert to fraction form
    11,988.20/17,974.52 = 5,748.06/x
  3. Step 3: Cross multiply
    11,988.20x = 17,974.52 × 5,748.06
  4. Step 4: Simplify right side
    11,988.20x = 103,318,619.43
  5. Step 5: Solve for x
    x = 103,318,619.43/11,988.20
  6. Step 6: Final answer
    x = 8,618.36

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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.