Home / 20,716.38-31,071.32-6,865.38

Finding the Fourth Proportional to 20,716.38, 31,071.32 and 6,865.38

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Solution

The fourth proportional to 20,716.38, 31,071.32 and 6,865.38 is: 10,296.99

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,716.38 : 31,071.32 = 6,865.38 : x
  2. Step 2: Convert to fraction form
    20,716.38/31,071.32 = 6,865.38/x
  3. Step 3: Cross multiply
    20,716.38x = 31,071.32 × 6,865.38
  4. Step 4: Simplify right side
    20,716.38x = 213,316,418.90
  5. Step 5: Solve for x
    x = 213,316,418.90/20,716.38
  6. Step 6: Final answer
    x = 10,296.99

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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.