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Finding the Fourth Proportional to 11,918.56, 17,851.92 and 11,377.12

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Solution

The fourth proportional to 11,918.56, 17,851.92 and 11,377.12 is: 17,040.94

Step by Step Solution

  1. Step 1: Write the proportion equation
    11,918.56 : 17,851.92 = 11,377.12 : x
  2. Step 2: Convert to fraction form
    11,918.56/17,851.92 = 11,377.12/x
  3. Step 3: Cross multiply
    11,918.56x = 17,851.92 × 11,377.12
  4. Step 4: Simplify right side
    11,918.56x = 203,103,436.07
  5. Step 5: Solve for x
    x = 203,103,436.07/11,918.56
  6. Step 6: Final answer
    x = 17,040.94

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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.