Home / 13,186.68-18,190.83-8,936.31

Finding the Fourth Proportional to 13,186.68, 18,190.83 and 8,936.31

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Solution

The fourth proportional to 13,186.68, 18,190.83 and 8,936.31 is: 12,327.51

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,186.68 : 18,190.83 = 8,936.31 : x
  2. Step 2: Convert to fraction form
    13,186.68/18,190.83 = 8,936.31/x
  3. Step 3: Cross multiply
    13,186.68x = 18,190.83 × 8,936.31
  4. Step 4: Simplify right side
    13,186.68x = 162,558,896.04
  5. Step 5: Solve for x
    x = 162,558,896.04/13,186.68
  6. Step 6: Final answer
    x = 12,327.51

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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.