Home / 13,481.61-18,604.20-7,512.90

Finding the Fourth Proportional to 13,481.61, 18,604.20 and 7,512.90

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Solution

The fourth proportional to 13,481.61, 18,604.20 and 7,512.90 is: 10,367.57

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,481.61 : 18,604.20 = 7,512.90 : x
  2. Step 2: Convert to fraction form
    13,481.61/18,604.20 = 7,512.90/x
  3. Step 3: Cross multiply
    13,481.61x = 18,604.20 × 7,512.90
  4. Step 4: Simplify right side
    13,481.61x = 139,771,494.18
  5. Step 5: Solve for x
    x = 139,771,494.18/13,481.61
  6. Step 6: Final answer
    x = 10,367.57

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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.