Home / 11,384.10-17,112.60-8,119.80

Finding the Fourth Proportional to 11,384.10, 17,112.60 and 8,119.80

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Solution

The fourth proportional to 11,384.10, 17,112.60 and 8,119.80 is: 12,205.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    11,384.10 : 17,112.60 = 8,119.80 : x
  2. Step 2: Convert to fraction form
    11,384.10/17,112.60 = 8,119.80/x
  3. Step 3: Cross multiply
    11,384.10x = 17,112.60 × 8,119.80
  4. Step 4: Simplify right side
    11,384.10x = 138,950,889.48
  5. Step 5: Solve for x
    x = 138,950,889.48/11,384.10
  6. Step 6: Final answer
    x = 12,205.70

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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.