Home / 20,579.91-30,867.39-8,735.42

Finding the Fourth Proportional to 20,579.91, 30,867.39 and 8,735.42

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Solution

The fourth proportional to 20,579.91, 30,867.39 and 8,735.42 is: 13,102.07

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,579.91 : 30,867.39 = 8,735.42 : x
  2. Step 2: Convert to fraction form
    20,579.91/30,867.39 = 8,735.42/x
  3. Step 3: Cross multiply
    20,579.91x = 30,867.39 × 8,735.42
  4. Step 4: Simplify right side
    20,579.91x = 269,639,461.62
  5. Step 5: Solve for x
    x = 269,639,461.62/20,579.91
  6. Step 6: Final answer
    x = 13,102.07

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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.