Home / 20,760.70-31,043.85-15,511.90

Finding the Fourth Proportional to 20,760.70, 31,043.85 and 15,511.90

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Solution

The fourth proportional to 20,760.70, 31,043.85 and 15,511.90 is: 23,195.22

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,760.70 : 31,043.85 = 15,511.90 : x
  2. Step 2: Convert to fraction form
    20,760.70/31,043.85 = 15,511.90/x
  3. Step 3: Cross multiply
    20,760.70x = 31,043.85 × 15,511.90
  4. Step 4: Simplify right side
    20,760.70x = 481,549,096.82
  5. Step 5: Solve for x
    x = 481,549,096.82/20,760.70
  6. Step 6: Final answer
    x = 23,195.22

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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.