Home / 12,660.80-18,993.26-3,895.72

Finding the Fourth Proportional to 12,660.80, 18,993.26 and 3,895.72

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Solution

The fourth proportional to 12,660.80, 18,993.26 and 3,895.72 is: 5,844.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,660.80 : 18,993.26 = 3,895.72 : x
  2. Step 2: Convert to fraction form
    12,660.80/18,993.26 = 3,895.72/x
  3. Step 3: Cross multiply
    12,660.80x = 18,993.26 × 3,895.72
  4. Step 4: Simplify right side
    12,660.80x = 73,992,385.10
  5. Step 5: Solve for x
    x = 73,992,385.10/12,660.80
  6. Step 6: Final answer
    x = 5,844.21

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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.