Home / 12,238.28-18,351.75-3,916.44

Finding the Fourth Proportional to 12,238.28, 18,351.75 and 3,916.44

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Solution

The fourth proportional to 12,238.28, 18,351.75 and 3,916.44 is: 5,872.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,238.28 : 18,351.75 = 3,916.44 : x
  2. Step 2: Convert to fraction form
    12,238.28/18,351.75 = 3,916.44/x
  3. Step 3: Cross multiply
    12,238.28x = 18,351.75 × 3,916.44
  4. Step 4: Simplify right side
    12,238.28x = 71,873,527.77
  5. Step 5: Solve for x
    x = 71,873,527.77/12,238.28
  6. Step 6: Final answer
    x = 5,872.85

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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.