Home / 20,669.04-31,003.68-5,086.56

Finding the Fourth Proportional to 20,669.04, 31,003.68 and 5,086.56

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Solution

The fourth proportional to 20,669.04, 31,003.68 and 5,086.56 is: 7,629.87

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,669.04 : 31,003.68 = 5,086.56 : x
  2. Step 2: Convert to fraction form
    20,669.04/31,003.68 = 5,086.56/x
  3. Step 3: Cross multiply
    20,669.04x = 31,003.68 × 5,086.56
  4. Step 4: Simplify right side
    20,669.04x = 157,702,078.54
  5. Step 5: Solve for x
    x = 157,702,078.54/20,669.04
  6. Step 6: Final answer
    x = 7,629.87

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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.