Home / 21,286.91-31,935.33-6,495.80

Finding the Fourth Proportional to 21,286.91, 31,935.33 and 6,495.80

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Solution

The fourth proportional to 21,286.91, 31,935.33 and 6,495.80 is: 9,745.22

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,286.91 : 31,935.33 = 6,495.80 : x
  2. Step 2: Convert to fraction form
    21,286.91/31,935.33 = 6,495.80/x
  3. Step 3: Cross multiply
    21,286.91x = 31,935.33 × 6,495.80
  4. Step 4: Simplify right side
    21,286.91x = 207,445,516.61
  5. Step 5: Solve for x
    x = 207,445,516.61/21,286.91
  6. Step 6: Final answer
    x = 9,745.22

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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.