Home / 20,900.44-28,842.96-11,469.88

Finding the Fourth Proportional to 20,900.44, 28,842.96 and 11,469.88

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Solution

The fourth proportional to 20,900.44, 28,842.96 and 11,469.88 is: 15,828.63

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,900.44 : 28,842.96 = 11,469.88 : x
  2. Step 2: Convert to fraction form
    20,900.44/28,842.96 = 11,469.88/x
  3. Step 3: Cross multiply
    20,900.44x = 28,842.96 × 11,469.88
  4. Step 4: Simplify right side
    20,900.44x = 330,825,290.04
  5. Step 5: Solve for x
    x = 330,825,290.04/20,900.44
  6. Step 6: Final answer
    x = 15,828.63

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.