Home / 12,150.16-18,218.77-3,827.90

Finding the Fourth Proportional to 12,150.16, 18,218.77 and 3,827.90

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Solution

The fourth proportional to 12,150.16, 18,218.77 and 3,827.90 is: 5,739.81

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,150.16 : 18,218.77 = 3,827.90 : x
  2. Step 2: Convert to fraction form
    12,150.16/18,218.77 = 3,827.90/x
  3. Step 3: Cross multiply
    12,150.16x = 18,218.77 × 3,827.90
  4. Step 4: Simplify right side
    12,150.16x = 69,739,629.68
  5. Step 5: Solve for x
    x = 69,739,629.68/12,150.16
  6. Step 6: Final answer
    x = 5,739.81

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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.