Home / 13,190.26-18,188.85-11,308.18

Finding the Fourth Proportional to 13,190.26, 18,188.85 and 11,308.18

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Solution

The fourth proportional to 13,190.26, 18,188.85 and 11,308.18 is: 15,593.54

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,190.26 : 18,188.85 = 11,308.18 : x
  2. Step 2: Convert to fraction form
    13,190.26/18,188.85 = 11,308.18/x
  3. Step 3: Cross multiply
    13,190.26x = 18,188.85 × 11,308.18
  4. Step 4: Simplify right side
    13,190.26x = 205,682,789.79
  5. Step 5: Solve for x
    x = 205,682,789.79/13,190.26
  6. Step 6: Final answer
    x = 15,593.54

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.