Home / 13,481.24-18,604.13-7,512.78

Finding the Fourth Proportional to 13,481.24, 18,604.13 and 7,512.78

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Solution

The fourth proportional to 13,481.24, 18,604.13 and 7,512.78 is: 10,367.66

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,481.24 : 18,604.13 = 7,512.78 : x
  2. Step 2: Convert to fraction form
    13,481.24/18,604.13 = 7,512.78/x
  3. Step 3: Cross multiply
    13,481.24x = 18,604.13 × 7,512.78
  4. Step 4: Simplify right side
    13,481.24x = 139,768,810.24
  5. Step 5: Solve for x
    x = 139,768,810.24/13,481.24
  6. Step 6: Final answer
    x = 10,367.66

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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.