Home / 13,198.68-18,212.04-8,166.25

Finding the Fourth Proportional to 13,198.68, 18,212.04 and 8,166.25

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Solution

The fourth proportional to 13,198.68, 18,212.04 and 8,166.25 is: 11,268.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,198.68 : 18,212.04 = 8,166.25 : x
  2. Step 2: Convert to fraction form
    13,198.68/18,212.04 = 8,166.25/x
  3. Step 3: Cross multiply
    13,198.68x = 18,212.04 × 8,166.25
  4. Step 4: Simplify right side
    13,198.68x = 148,724,094.42
  5. Step 5: Solve for x
    x = 148,724,094.42/13,198.68
  6. Step 6: Final answer
    x = 11,268.10

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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.