Home / 36,911.80-55,367.70-21,311.20

Finding the Fourth Proportional to 36,911.80, 55,367.70 and 21,311.20

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Solution

The fourth proportional to 36,911.80, 55,367.70 and 21,311.20 is: 31,966.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    36,911.80 : 55,367.70 = 21,311.20 : x
  2. Step 2: Convert to fraction form
    36,911.80/55,367.70 = 21,311.20/x
  3. Step 3: Cross multiply
    36,911.80x = 55,367.70 × 21,311.20
  4. Step 4: Simplify right side
    36,911.80x = 1,179,952,128.24
  5. Step 5: Solve for x
    x = 1,179,952,128.24/36,911.80
  6. Step 6: Final answer
    x = 31,966.80

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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.