Home / 12,143.71-18,218.13-3,826.09

Finding the Fourth Proportional to 12,143.71, 18,218.13 and 3,826.09

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Solution

The fourth proportional to 12,143.71, 18,218.13 and 3,826.09 is: 5,739.94

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,143.71 : 18,218.13 = 3,826.09 : x
  2. Step 2: Convert to fraction form
    12,143.71/18,218.13 = 3,826.09/x
  3. Step 3: Cross multiply
    12,143.71x = 18,218.13 × 3,826.09
  4. Step 4: Simplify right side
    12,143.71x = 69,704,205.01
  5. Step 5: Solve for x
    x = 69,704,205.01/12,143.71
  6. Step 6: Final answer
    x = 5,739.94

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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.