Home / 21,286.51-31,929.68-6,495.38

Finding the Fourth Proportional to 21,286.51, 31,929.68 and 6,495.38

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Solution

The fourth proportional to 21,286.51, 31,929.68 and 6,495.38 is: 9,743.04

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,286.51 : 31,929.68 = 6,495.38 : x
  2. Step 2: Convert to fraction form
    21,286.51/31,929.68 = 6,495.38/x
  3. Step 3: Cross multiply
    21,286.51x = 31,929.68 × 6,495.38
  4. Step 4: Simplify right side
    21,286.51x = 207,395,292.58
  5. Step 5: Solve for x
    x = 207,395,292.58/21,286.51
  6. Step 6: Final answer
    x = 9,743.04

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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.