Home / 13,623.75-20,436.09-3,763.79

Finding the Fourth Proportional to 13,623.75, 20,436.09 and 3,763.79

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Solution

The fourth proportional to 13,623.75, 20,436.09 and 3,763.79 is: 5,645.81

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,623.75 : 20,436.09 = 3,763.79 : x
  2. Step 2: Convert to fraction form
    13,623.75/20,436.09 = 3,763.79/x
  3. Step 3: Cross multiply
    13,623.75x = 20,436.09 × 3,763.79
  4. Step 4: Simplify right side
    13,623.75x = 76,917,049.00
  5. Step 5: Solve for x
    x = 76,917,049.00/13,623.75
  6. Step 6: Final answer
    x = 5,645.81

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1.5x scale

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.