Home / 20,674.20-31,003.92-8,984.64

Finding the Fourth Proportional to 20,674.20, 31,003.92 and 8,984.64

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Solution

The fourth proportional to 20,674.20, 31,003.92 and 8,984.64 is: 13,473.75

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,674.20 : 31,003.92 = 8,984.64 : x
  2. Step 2: Convert to fraction form
    20,674.20/31,003.92 = 8,984.64/x
  3. Step 3: Cross multiply
    20,674.20x = 31,003.92 × 8,984.64
  4. Step 4: Simplify right side
    20,674.20x = 278,559,059.79
  5. Step 5: Solve for x
    x = 278,559,059.79/20,674.20
  6. Step 6: Final answer
    x = 13,473.75

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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.