Home / 12,431.22-18,738.11-12,256.26

Finding the Fourth Proportional to 12,431.22, 18,738.11 and 12,256.26

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Solution

The fourth proportional to 12,431.22, 18,738.11 and 12,256.26 is: 18,474.38

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,431.22 : 18,738.11 = 12,256.26 : x
  2. Step 2: Convert to fraction form
    12,431.22/18,738.11 = 12,256.26/x
  3. Step 3: Cross multiply
    12,431.22x = 18,738.11 × 12,256.26
  4. Step 4: Simplify right side
    12,431.22x = 229,659,086.79
  5. Step 5: Solve for x
    x = 229,659,086.79/12,431.22
  6. Step 6: Final answer
    x = 18,474.38

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.51) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.