Home / 20,351.30-30,531.31-6,311.02

Finding the Fourth Proportional to 20,351.30, 30,531.31 and 6,311.02

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Solution

The fourth proportional to 20,351.30, 30,531.31 and 6,311.02 is: 9,467.88

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,351.30 : 30,531.31 = 6,311.02 : x
  2. Step 2: Convert to fraction form
    20,351.30/30,531.31 = 6,311.02/x
  3. Step 3: Cross multiply
    20,351.30x = 30,531.31 × 6,311.02
  4. Step 4: Simplify right side
    20,351.30x = 192,683,708.04
  5. Step 5: Solve for x
    x = 192,683,708.04/20,351.30
  6. Step 6: Final answer
    x = 9,467.88

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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.