Home / 13,422.63-20,131.20-5,099.73

Finding the Fourth Proportional to 13,422.63, 20,131.20 and 5,099.73

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Solution

The fourth proportional to 13,422.63, 20,131.20 and 5,099.73 is: 7,648.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,422.63 : 20,131.20 = 5,099.73 : x
  2. Step 2: Convert to fraction form
    13,422.63/20,131.20 = 5,099.73/x
  3. Step 3: Cross multiply
    13,422.63x = 20,131.20 × 5,099.73
  4. Step 4: Simplify right side
    13,422.63x = 102,663,684.58
  5. Step 5: Solve for x
    x = 102,663,684.58/13,422.63
  6. Step 6: Final answer
    x = 7,648.55

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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.