Home / 12,228.28-18,335.53-3,906.34

Finding the Fourth Proportional to 12,228.28, 18,335.53 and 3,906.34

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Solution

The fourth proportional to 12,228.28, 18,335.53 and 3,906.34 is: 5,857.31

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,228.28 : 18,335.53 = 3,906.34 : x
  2. Step 2: Convert to fraction form
    12,228.28/18,335.53 = 3,906.34/x
  3. Step 3: Cross multiply
    12,228.28x = 18,335.53 × 3,906.34
  4. Step 4: Simplify right side
    12,228.28x = 71,624,794.73
  5. Step 5: Solve for x
    x = 71,624,794.73/12,228.28
  6. Step 6: Final answer
    x = 5,857.31

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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.