Home / 20,669.22-31,003.41-6,629.28

Finding the Fourth Proportional to 20,669.22, 31,003.41 and 6,629.28

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Solution

The fourth proportional to 20,669.22, 31,003.41 and 6,629.28 is: 9,943.79

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,669.22 : 31,003.41 = 6,629.28 : x
  2. Step 2: Convert to fraction form
    20,669.22/31,003.41 = 6,629.28/x
  3. Step 3: Cross multiply
    20,669.22x = 31,003.41 × 6,629.28
  4. Step 4: Simplify right side
    20,669.22x = 205,530,285.84
  5. Step 5: Solve for x
    x = 205,530,285.84/20,669.22
  6. Step 6: Final answer
    x = 9,943.79

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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.