Home / 12,141.39-18,199.11-8,668.11

Finding the Fourth Proportional to 12,141.39, 18,199.11 and 8,668.11

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Solution

The fourth proportional to 12,141.39, 18,199.11 and 8,668.11 is: 12,992.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,141.39 : 18,199.11 = 8,668.11 : x
  2. Step 2: Convert to fraction form
    12,141.39/18,199.11 = 8,668.11/x
  3. Step 3: Cross multiply
    12,141.39x = 18,199.11 × 8,668.11
  4. Step 4: Simplify right side
    12,141.39x = 157,751,887.38
  5. Step 5: Solve for x
    x = 157,751,887.38/12,141.39
  6. Step 6: Final answer
    x = 12,992.90

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.