Home / 20,950.11-31,418.49-6,907.52

Finding the Fourth Proportional to 20,950.11, 31,418.49 and 6,907.52

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Solution

The fourth proportional to 20,950.11, 31,418.49 and 6,907.52 is: 10,359.07

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,950.11 : 31,418.49 = 6,907.52 : x
  2. Step 2: Convert to fraction form
    20,950.11/31,418.49 = 6,907.52/x
  3. Step 3: Cross multiply
    20,950.11x = 31,418.49 × 6,907.52
  4. Step 4: Simplify right side
    20,950.11x = 217,023,690.95
  5. Step 5: Solve for x
    x = 217,023,690.95/20,950.11
  6. Step 6: Final answer
    x = 10,359.07

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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.