Home / 20,850.12-31,238.46-10,965.96

Finding the Fourth Proportional to 20,850.12, 31,238.46 and 10,965.96

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Solution

The fourth proportional to 20,850.12, 31,238.46 and 10,965.96 is: 16,429.63

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,850.12 : 31,238.46 = 10,965.96 : x
  2. Step 2: Convert to fraction form
    20,850.12/31,238.46 = 10,965.96/x
  3. Step 3: Cross multiply
    20,850.12x = 31,238.46 × 10,965.96
  4. Step 4: Simplify right side
    20,850.12x = 342,559,702.82
  5. Step 5: Solve for x
    x = 342,559,702.82/20,850.12
  6. Step 6: Final answer
    x = 16,429.63

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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.