Home / 13,164.37-18,161.97-8,451.38

Finding the Fourth Proportional to 13,164.37, 18,161.97 and 8,451.38

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Solution

The fourth proportional to 13,164.37, 18,161.97 and 8,451.38 is: 11,659.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,164.37 : 18,161.97 = 8,451.38 : x
  2. Step 2: Convert to fraction form
    13,164.37/18,161.97 = 8,451.38/x
  3. Step 3: Cross multiply
    13,164.37x = 18,161.97 × 8,451.38
  4. Step 4: Simplify right side
    13,164.37x = 153,493,710.02
  5. Step 5: Solve for x
    x = 153,493,710.02/13,164.37
  6. Step 6: Final answer
    x = 11,659.78

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.