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Finding the Fourth Proportional to 11,959.56, 17,930.68 and 6,111.72

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Solution

The fourth proportional to 11,959.56, 17,930.68 and 6,111.72 is: 9,163.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    11,959.56 : 17,930.68 = 6,111.72 : x
  2. Step 2: Convert to fraction form
    11,959.56/17,930.68 = 6,111.72/x
  3. Step 3: Cross multiply
    11,959.56x = 17,930.68 × 6,111.72
  4. Step 4: Simplify right side
    11,959.56x = 109,587,295.57
  5. Step 5: Solve for x
    x = 109,587,295.57/11,959.56
  6. Step 6: Final answer
    x = 9,163.15

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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.