Home / 20,701.25-31,057.04-8,217.15

Finding the Fourth Proportional to 20,701.25, 31,057.04 and 8,217.15

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Solution

The fourth proportional to 20,701.25, 31,057.04 and 8,217.15 is: 12,327.77

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,701.25 : 31,057.04 = 8,217.15 : x
  2. Step 2: Convert to fraction form
    20,701.25/31,057.04 = 8,217.15/x
  3. Step 3: Cross multiply
    20,701.25x = 31,057.04 × 8,217.15
  4. Step 4: Simplify right side
    20,701.25x = 255,200,221.49
  5. Step 5: Solve for x
    x = 255,200,221.49/20,701.25
  6. Step 6: Final answer
    x = 12,327.77

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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.