Home / 20,751.84-31,144.41-10,896.96

Finding the Fourth Proportional to 20,751.84, 31,144.41 and 10,896.96

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Solution

The fourth proportional to 20,751.84, 31,144.41 and 10,896.96 is: 16,354.18

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,751.84 : 31,144.41 = 10,896.96 : x
  2. Step 2: Convert to fraction form
    20,751.84/31,144.41 = 10,896.96/x
  3. Step 3: Cross multiply
    20,751.84x = 31,144.41 × 10,896.96
  4. Step 4: Simplify right side
    20,751.84x = 339,379,389.99
  5. Step 5: Solve for x
    x = 339,379,389.99/20,751.84
  6. Step 6: Final answer
    x = 16,354.18

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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.