Home / 13,200.67-18,217.56-8,161.03

Finding the Fourth Proportional to 13,200.67, 18,217.56 and 8,161.03

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Solution

The fourth proportional to 13,200.67, 18,217.56 and 8,161.03 is: 11,262.61

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,200.67 : 18,217.56 = 8,161.03 : x
  2. Step 2: Convert to fraction form
    13,200.67/18,217.56 = 8,161.03/x
  3. Step 3: Cross multiply
    13,200.67x = 18,217.56 × 8,161.03
  4. Step 4: Simplify right side
    13,200.67x = 148,674,053.69
  5. Step 5: Solve for x
    x = 148,674,053.69/13,200.67
  6. Step 6: Final answer
    x = 11,262.61

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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.