Home / 13,399.38-20,112.58-11,849.58

Finding the Fourth Proportional to 13,399.38, 20,112.58 and 11,849.58

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Solution

The fourth proportional to 13,399.38, 20,112.58 and 11,849.58 is: 17,786.32

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,399.38 : 20,112.58 = 11,849.58 : x
  2. Step 2: Convert to fraction form
    13,399.38/20,112.58 = 11,849.58/x
  3. Step 3: Cross multiply
    13,399.38x = 20,112.58 × 11,849.58
  4. Step 4: Simplify right side
    13,399.38x = 238,325,625.72
  5. Step 5: Solve for x
    x = 238,325,625.72/13,399.38
  6. Step 6: Final answer
    x = 17,786.32

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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.