Home / 20,351.50-28,084.24-11,853.89

Finding the Fourth Proportional to 20,351.50, 28,084.24 and 11,853.89

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Solution

The fourth proportional to 20,351.50, 28,084.24 and 11,853.89 is: 16,357.88

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,351.50 : 28,084.24 = 11,853.89 : x
  2. Step 2: Convert to fraction form
    20,351.50/28,084.24 = 11,853.89/x
  3. Step 3: Cross multiply
    20,351.50x = 28,084.24 × 11,853.89
  4. Step 4: Simplify right side
    20,351.50x = 332,907,321.64
  5. Step 5: Solve for x
    x = 332,907,321.64/20,351.50
  6. Step 6: Final answer
    x = 16,357.88

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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.