Home / 12,426.69-18,633.60-3,660.45

Finding the Fourth Proportional to 12,426.69, 18,633.60 and 3,660.45

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Solution

The fourth proportional to 12,426.69, 18,633.60 and 3,660.45 is: 5,488.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,426.69 : 18,633.60 = 3,660.45 : x
  2. Step 2: Convert to fraction form
    12,426.69/18,633.60 = 3,660.45/x
  3. Step 3: Cross multiply
    12,426.69x = 18,633.60 × 3,660.45
  4. Step 4: Simplify right side
    12,426.69x = 68,207,361.12
  5. Step 5: Solve for x
    x = 68,207,361.12/12,426.69
  6. Step 6: Final answer
    x = 5,488.78

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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.