Home / 11,986.56-17,967.60-4,188.96

Finding the Fourth Proportional to 11,986.56, 17,967.60 and 4,188.96

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Solution

The fourth proportional to 11,986.56, 17,967.60 and 4,188.96 is: 6,279.16

Step by Step Solution

  1. Step 1: Write the proportion equation
    11,986.56 : 17,967.60 = 4,188.96 : x
  2. Step 2: Convert to fraction form
    11,986.56/17,967.60 = 4,188.96/x
  3. Step 3: Cross multiply
    11,986.56x = 17,967.60 × 4,188.96
  4. Step 4: Simplify right side
    11,986.56x = 75,265,557.70
  5. Step 5: Solve for x
    x = 75,265,557.70/11,986.56
  6. Step 6: Final answer
    x = 6,279.16

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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.