Home / 13,661.33-18,716.09-13,149.40

Finding the Fourth Proportional to 13,661.33, 18,716.09 and 13,149.40

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Solution

The fourth proportional to 13,661.33, 18,716.09 and 13,149.40 is: 18,014.73

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,661.33 : 18,716.09 = 13,149.40 : x
  2. Step 2: Convert to fraction form
    13,661.33/18,716.09 = 13,149.40/x
  3. Step 3: Cross multiply
    13,661.33x = 18,716.09 × 13,149.40
  4. Step 4: Simplify right side
    13,661.33x = 246,105,260.75
  5. Step 5: Solve for x
    x = 246,105,260.75/13,661.33
  6. Step 6: Final answer
    x = 18,014.73

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.37) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.