Home / 20,867.02-31,299.72-8,383.30

Finding the Fourth Proportional to 20,867.02, 31,299.72 and 8,383.30

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Solution

The fourth proportional to 20,867.02, 31,299.72 and 8,383.30 is: 12,574.62

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,867.02 : 31,299.72 = 8,383.30 : x
  2. Step 2: Convert to fraction form
    20,867.02/31,299.72 = 8,383.30/x
  3. Step 3: Cross multiply
    20,867.02x = 31,299.72 × 8,383.30
  4. Step 4: Simplify right side
    20,867.02x = 262,394,942.68
  5. Step 5: Solve for x
    x = 262,394,942.68/20,867.02
  6. Step 6: Final answer
    x = 12,574.62

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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.