Home / 18,278.34-25,209.78-11,906.94

Finding the Fourth Proportional to 18,278.34, 25,209.78 and 11,906.94

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Solution

The fourth proportional to 18,278.34, 25,209.78 and 11,906.94 is: 16,422.24

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,278.34 : 25,209.78 = 11,906.94 : x
  2. Step 2: Convert to fraction form
    18,278.34/25,209.78 = 11,906.94/x
  3. Step 3: Cross multiply
    18,278.34x = 25,209.78 × 11,906.94
  4. Step 4: Simplify right side
    18,278.34x = 300,171,383.83
  5. Step 5: Solve for x
    x = 300,171,383.83/18,278.34
  6. Step 6: Final answer
    x = 16,422.24

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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.