Home / 20,620.18-30,933.29-7,469.47

Finding the Fourth Proportional to 20,620.18, 30,933.29 and 7,469.47

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Solution

The fourth proportional to 20,620.18, 30,933.29 and 7,469.47 is: 11,205.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,620.18 : 30,933.29 = 7,469.47 : x
  2. Step 2: Convert to fraction form
    20,620.18/30,933.29 = 7,469.47/x
  3. Step 3: Cross multiply
    20,620.18x = 30,933.29 × 7,469.47
  4. Step 4: Simplify right side
    20,620.18x = 231,055,281.66
  5. Step 5: Solve for x
    x = 231,055,281.66/20,620.18
  6. Step 6: Final answer
    x = 11,205.30

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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.