Home / 13,201.26-18,221.49-8,166.30

Finding the Fourth Proportional to 13,201.26, 18,221.49 and 8,166.30

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Solution

The fourth proportional to 13,201.26, 18,221.49 and 8,166.30 is: 11,271.81

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,201.26 : 18,221.49 = 8,166.30 : x
  2. Step 2: Convert to fraction form
    13,201.26/18,221.49 = 8,166.30/x
  3. Step 3: Cross multiply
    13,201.26x = 18,221.49 × 8,166.30
  4. Step 4: Simplify right side
    13,201.26x = 148,802,153.79
  5. Step 5: Solve for x
    x = 148,802,153.79/13,201.26
  6. Step 6: Final answer
    x = 11,271.81

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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.