Home / 13,629.40-20,444.13-3,769.20

Finding the Fourth Proportional to 13,629.40, 20,444.13 and 3,769.20

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Solution

The fourth proportional to 13,629.40, 20,444.13 and 3,769.20 is: 5,653.81

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,629.40 : 20,444.13 = 3,769.20 : x
  2. Step 2: Convert to fraction form
    13,629.40/20,444.13 = 3,769.20/x
  3. Step 3: Cross multiply
    13,629.40x = 20,444.13 × 3,769.20
  4. Step 4: Simplify right side
    13,629.40x = 77,058,014.80
  5. Step 5: Solve for x
    x = 77,058,014.80/13,629.40
  6. Step 6: Final answer
    x = 5,653.81

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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.