Home / 13,190.22-19,789.38-5,399.64

Finding the Fourth Proportional to 13,190.22, 19,789.38 and 5,399.64

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Solution

The fourth proportional to 13,190.22, 19,789.38 and 5,399.64 is: 8,101.12

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,190.22 : 19,789.38 = 5,399.64 : x
  2. Step 2: Convert to fraction form
    13,190.22/19,789.38 = 5,399.64/x
  3. Step 3: Cross multiply
    13,190.22x = 19,789.38 × 5,399.64
  4. Step 4: Simplify right side
    13,190.22x = 106,855,527.82
  5. Step 5: Solve for x
    x = 106,855,527.82/13,190.22
  6. Step 6: Final answer
    x = 8,101.12

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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.