Home / 21,286.83-31,930.26-6,495.42

Finding the Fourth Proportional to 21,286.83, 31,930.26 and 6,495.42

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Solution

The fourth proportional to 21,286.83, 31,930.26 and 6,495.42 is: 9,743.13

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,286.83 : 31,930.26 = 6,495.42 : x
  2. Step 2: Convert to fraction form
    21,286.83/31,930.26 = 6,495.42/x
  3. Step 3: Cross multiply
    21,286.83x = 31,930.26 × 6,495.42
  4. Step 4: Simplify right side
    21,286.83x = 207,400,449.41
  5. Step 5: Solve for x
    x = 207,400,449.41/21,286.83
  6. Step 6: Final answer
    x = 9,743.13

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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.