Home / 20,950.38-31,417.67-6,907.82

Finding the Fourth Proportional to 20,950.38, 31,417.67 and 6,907.82

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Solution

The fourth proportional to 20,950.38, 31,417.67 and 6,907.82 is: 10,359.12

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,950.38 : 31,417.67 = 6,907.82 : x
  2. Step 2: Convert to fraction form
    20,950.38/31,417.67 = 6,907.82/x
  3. Step 3: Cross multiply
    20,950.38x = 31,417.67 × 6,907.82
  4. Step 4: Simplify right side
    20,950.38x = 217,027,469.36
  5. Step 5: Solve for x
    x = 217,027,469.36/20,950.38
  6. Step 6: Final answer
    x = 10,359.12

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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.