Home / 12,661.44-18,991.80-3,896.16

Finding the Fourth Proportional to 12,661.44, 18,991.80 and 3,896.16

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Solution

The fourth proportional to 12,661.44, 18,991.80 and 3,896.16 is: 5,844.13

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,661.44 : 18,991.80 = 3,896.16 : x
  2. Step 2: Convert to fraction form
    12,661.44/18,991.80 = 3,896.16/x
  3. Step 3: Cross multiply
    12,661.44x = 18,991.80 × 3,896.16
  4. Step 4: Simplify right side
    12,661.44x = 73,995,091.49
  5. Step 5: Solve for x
    x = 73,995,091.49/12,661.44
  6. Step 6: Final answer
    x = 5,844.13

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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.