Home / 13,198.93-18,209.50-8,161.54

Finding the Fourth Proportional to 13,198.93, 18,209.50 and 8,161.54

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Solution

The fourth proportional to 13,198.93, 18,209.50 and 8,161.54 is: 11,259.82

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,198.93 : 18,209.50 = 8,161.54 : x
  2. Step 2: Convert to fraction form
    13,198.93/18,209.50 = 8,161.54/x
  3. Step 3: Cross multiply
    13,198.93x = 18,209.50 × 8,161.54
  4. Step 4: Simplify right side
    13,198.93x = 148,617,562.63
  5. Step 5: Solve for x
    x = 148,617,562.63/13,198.93
  6. Step 6: Final answer
    x = 11,259.82

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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.