Home / 20,982.48-31,462.21-8,319.41

Finding the Fourth Proportional to 20,982.48, 31,462.21 and 8,319.41

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Solution

The fourth proportional to 20,982.48, 31,462.21 and 8,319.41 is: 12,474.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,982.48 : 31,462.21 = 8,319.41 : x
  2. Step 2: Convert to fraction form
    20,982.48/31,462.21 = 8,319.41/x
  3. Step 3: Cross multiply
    20,982.48x = 31,462.21 × 8,319.41
  4. Step 4: Simplify right side
    20,982.48x = 261,746,995.57
  5. Step 5: Solve for x
    x = 261,746,995.57/20,982.48
  6. Step 6: Final answer
    x = 12,474.55

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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.