Home / 21,020.66-31,531.11-6,229.71

Finding the Fourth Proportional to 21,020.66, 31,531.11 and 6,229.71

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Solution

The fourth proportional to 21,020.66, 31,531.11 and 6,229.71 is: 9,344.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,020.66 : 31,531.11 = 6,229.71 : x
  2. Step 2: Convert to fraction form
    21,020.66/31,531.11 = 6,229.71/x
  3. Step 3: Cross multiply
    21,020.66x = 31,531.11 × 6,229.71
  4. Step 4: Simplify right side
    21,020.66x = 196,429,647.92
  5. Step 5: Solve for x
    x = 196,429,647.92/21,020.66
  6. Step 6: Final answer
    x = 9,344.60

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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.