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Finding the Fourth Proportional to 11,812.76, 17,719.16 and 11,091.05

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Solution

The fourth proportional to 11,812.76, 17,719.16 and 11,091.05 is: 16,636.59

Step by Step Solution

  1. Step 1: Write the proportion equation
    11,812.76 : 17,719.16 = 11,091.05 : x
  2. Step 2: Convert to fraction form
    11,812.76/17,719.16 = 11,091.05/x
  3. Step 3: Cross multiply
    11,812.76x = 17,719.16 × 11,091.05
  4. Step 4: Simplify right side
    11,812.76x = 196,524,061.75
  5. Step 5: Solve for x
    x = 196,524,061.75/11,812.76
  6. Step 6: Final answer
    x = 16,636.59

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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.