Home / 20,720.88-31,092.46-9,033.39

Finding the Fourth Proportional to 20,720.88, 31,092.46 and 9,033.39

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Solution

The fourth proportional to 20,720.88, 31,092.46 and 9,033.39 is: 13,554.94

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,720.88 : 31,092.46 = 9,033.39 : x
  2. Step 2: Convert to fraction form
    20,720.88/31,092.46 = 9,033.39/x
  3. Step 3: Cross multiply
    20,720.88x = 31,092.46 × 9,033.39
  4. Step 4: Simplify right side
    20,720.88x = 280,870,294.66
  5. Step 5: Solve for x
    x = 280,870,294.66/20,720.88
  6. Step 6: Final answer
    x = 13,554.94

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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.