Home / 11,407.14-17,091.36-8,103.78

Finding the Fourth Proportional to 11,407.14, 17,091.36 and 8,103.78

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Solution

The fourth proportional to 11,407.14, 17,091.36 and 8,103.78 is: 12,141.92

Step by Step Solution

  1. Step 1: Write the proportion equation
    11,407.14 : 17,091.36 = 8,103.78 : x
  2. Step 2: Convert to fraction form
    11,407.14/17,091.36 = 8,103.78/x
  3. Step 3: Cross multiply
    11,407.14x = 17,091.36 × 8,103.78
  4. Step 4: Simplify right side
    11,407.14x = 138,504,621.34
  5. Step 5: Solve for x
    x = 138,504,621.34/11,407.14
  6. Step 6: Final answer
    x = 12,141.92

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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.