Home / 20,410.79-30,629.21-8,723.97

Finding the Fourth Proportional to 20,410.79, 30,629.21 and 8,723.97

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Solution

The fourth proportional to 20,410.79, 30,629.21 and 8,723.97 is: 13,091.52

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,410.79 : 30,629.21 = 8,723.97 : x
  2. Step 2: Convert to fraction form
    20,410.79/30,629.21 = 8,723.97/x
  3. Step 3: Cross multiply
    20,410.79x = 30,629.21 × 8,723.97
  4. Step 4: Simplify right side
    20,410.79x = 267,208,265.54
  5. Step 5: Solve for x
    x = 267,208,265.54/20,410.79
  6. Step 6: Final answer
    x = 13,091.52

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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.