Home / 13,161.67-18,161.35-8,452.33

Finding the Fourth Proportional to 13,161.67, 18,161.35 and 8,452.33

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Solution

The fourth proportional to 13,161.67, 18,161.35 and 8,452.33 is: 11,663.09

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,161.67 : 18,161.35 = 8,452.33 : x
  2. Step 2: Convert to fraction form
    13,161.67/18,161.35 = 8,452.33/x
  3. Step 3: Cross multiply
    13,161.67x = 18,161.35 × 8,452.33
  4. Step 4: Simplify right side
    13,161.67x = 153,505,723.45
  5. Step 5: Solve for x
    x = 153,505,723.45/13,161.67
  6. Step 6: Final answer
    x = 11,663.09

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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.