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Finding the Fourth Proportional to 13,601.59, 20,399.99 and 3,738.49

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Solution

The fourth proportional to 13,601.59, 20,399.99 and 3,738.49 is: 5,607.07

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,601.59 : 20,399.99 = 3,738.49 : x
  2. Step 2: Convert to fraction form
    13,601.59/20,399.99 = 3,738.49/x
  3. Step 3: Cross multiply
    13,601.59x = 20,399.99 × 3,738.49
  4. Step 4: Simplify right side
    13,601.59x = 76,265,088.92
  5. Step 5: Solve for x
    x = 76,265,088.92/13,601.59
  6. Step 6: Final answer
    x = 5,607.07

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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.