Home / 18,786.68-28,194.21-12,849.38

Finding the Fourth Proportional to 18,786.68, 28,194.21 and 12,849.38

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Solution

The fourth proportional to 18,786.68, 28,194.21 and 12,849.38 is: 19,283.77

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,786.68 : 28,194.21 = 12,849.38 : x
  2. Step 2: Convert to fraction form
    18,786.68/28,194.21 = 12,849.38/x
  3. Step 3: Cross multiply
    18,786.68x = 28,194.21 × 12,849.38
  4. Step 4: Simplify right side
    18,786.68x = 362,277,977.12
  5. Step 5: Solve for x
    x = 362,277,977.12/18,786.68
  6. Step 6: Final answer
    x = 19,283.77

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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.