Home / 11,747.60-17,621.40-8,982.80

Finding the Fourth Proportional to 11,747.60, 17,621.40 and 8,982.80

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Solution

The fourth proportional to 11,747.60, 17,621.40 and 8,982.80 is: 13,474.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    11,747.60 : 17,621.40 = 8,982.80 : x
  2. Step 2: Convert to fraction form
    11,747.60/17,621.40 = 8,982.80/x
  3. Step 3: Cross multiply
    11,747.60x = 17,621.40 × 8,982.80
  4. Step 4: Simplify right side
    11,747.60x = 158,289,511.92
  5. Step 5: Solve for x
    x = 158,289,511.92/11,747.60
  6. Step 6: Final answer
    x = 13,474.20

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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.