Home / 20,769.94-31,171.18-14,489.09

Finding the Fourth Proportional to 20,769.94, 31,171.18 and 14,489.09

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Solution

The fourth proportional to 20,769.94, 31,171.18 and 14,489.09 is: 21,744.99

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,769.94 : 31,171.18 = 14,489.09 : x
  2. Step 2: Convert to fraction form
    20,769.94/31,171.18 = 14,489.09/x
  3. Step 3: Cross multiply
    20,769.94x = 31,171.18 × 14,489.09
  4. Step 4: Simplify right side
    20,769.94x = 451,642,074.13
  5. Step 5: Solve for x
    x = 451,642,074.13/20,769.94
  6. Step 6: Final answer
    x = 21,744.99

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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.