Home / 13,769.28-20,653.90-3,908.64

Finding the Fourth Proportional to 13,769.28, 20,653.90 and 3,908.64

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Solution

The fourth proportional to 13,769.28, 20,653.90 and 3,908.64 is: 5,862.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,769.28 : 20,653.90 = 3,908.64 : x
  2. Step 2: Convert to fraction form
    13,769.28/20,653.90 = 3,908.64/x
  3. Step 3: Cross multiply
    13,769.28x = 20,653.90 × 3,908.64
  4. Step 4: Simplify right side
    13,769.28x = 80,728,659.70
  5. Step 5: Solve for x
    x = 80,728,659.70/13,769.28
  6. Step 6: Final answer
    x = 5,862.95

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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.