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Finding the Fourth Proportional to 13,632.49, 18,809.97 and 8,040.25

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Solution

The fourth proportional to 13,632.49, 18,809.97 and 8,040.25 is: 11,093.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,632.49 : 18,809.97 = 8,040.25 : x
  2. Step 2: Convert to fraction form
    13,632.49/18,809.97 = 8,040.25/x
  3. Step 3: Cross multiply
    13,632.49x = 18,809.97 × 8,040.25
  4. Step 4: Simplify right side
    13,632.49x = 151,236,861.29
  5. Step 5: Solve for x
    x = 151,236,861.29/13,632.49
  6. Step 6: Final answer
    x = 11,093.85

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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.