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Finding the Fourth Proportional to 13,304.46, 19,920.69 and 8,912.46

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Solution

The fourth proportional to 13,304.46, 19,920.69 and 8,912.46 is: 13,344.57

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,304.46 : 19,920.69 = 8,912.46 : x
  2. Step 2: Convert to fraction form
    13,304.46/19,920.69 = 8,912.46/x
  3. Step 3: Cross multiply
    13,304.46x = 19,920.69 × 8,912.46
  4. Step 4: Simplify right side
    13,304.46x = 177,542,352.80
  5. Step 5: Solve for x
    x = 177,542,352.80/13,304.46
  6. Step 6: Final answer
    x = 13,344.57

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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.