Home / 11,936.72-17,866.92-7,980.32

Finding the Fourth Proportional to 11,936.72, 17,866.92 and 7,980.32

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Solution

The fourth proportional to 11,936.72, 17,866.92 and 7,980.32 is: 11,944.97

Step by Step Solution

  1. Step 1: Write the proportion equation
    11,936.72 : 17,866.92 = 7,980.32 : x
  2. Step 2: Convert to fraction form
    11,936.72/17,866.92 = 7,980.32/x
  3. Step 3: Cross multiply
    11,936.72x = 17,866.92 × 7,980.32
  4. Step 4: Simplify right side
    11,936.72x = 142,583,739.01
  5. Step 5: Solve for x
    x = 142,583,739.01/11,936.72
  6. Step 6: Final answer
    x = 11,944.97

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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.