Home / 12,426.08-18,639.14-3,660.89

Finding the Fourth Proportional to 12,426.08, 18,639.14 and 3,660.89

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Solution

The fourth proportional to 12,426.08, 18,639.14 and 3,660.89 is: 5,491.33

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,426.08 : 18,639.14 = 3,660.89 : x
  2. Step 2: Convert to fraction form
    12,426.08/18,639.14 = 3,660.89/x
  3. Step 3: Cross multiply
    12,426.08x = 18,639.14 × 3,660.89
  4. Step 4: Simplify right side
    12,426.08x = 68,235,729.73
  5. Step 5: Solve for x
    x = 68,235,729.73/12,426.08
  6. Step 6: Final answer
    x = 5,491.33

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Similar ratio
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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.