Home / 13,630.97-18,809.87-8,324.66

Finding the Fourth Proportional to 13,630.97, 18,809.87 and 8,324.66

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Solution

The fourth proportional to 13,630.97, 18,809.87 and 8,324.66 is: 11,487.49

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,630.97 : 18,809.87 = 8,324.66 : x
  2. Step 2: Convert to fraction form
    13,630.97/18,809.87 = 8,324.66/x
  3. Step 3: Cross multiply
    13,630.97x = 18,809.87 × 8,324.66
  4. Step 4: Simplify right side
    13,630.97x = 156,585,636.72
  5. Step 5: Solve for x
    x = 156,585,636.72/13,630.97
  6. Step 6: Final answer
    x = 11,487.49

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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.