Home / 12,168.45-18,249.92-5,588.31

Finding the Fourth Proportional to 12,168.45, 18,249.92 and 5,588.31

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Solution

The fourth proportional to 12,168.45, 18,249.92 and 5,588.31 is: 8,381.19

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,168.45 : 18,249.92 = 5,588.31 : x
  2. Step 2: Convert to fraction form
    12,168.45/18,249.92 = 5,588.31/x
  3. Step 3: Cross multiply
    12,168.45x = 18,249.92 × 5,588.31
  4. Step 4: Simplify right side
    12,168.45x = 101,986,091.24
  5. Step 5: Solve for x
    x = 101,986,091.24/12,168.45
  6. Step 6: Final answer
    x = 8,381.19

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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.