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Finding the Fourth Proportional to 11,901.56, 17,855.94 and 4,508.28

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Solution

The fourth proportional to 11,901.56, 17,855.94 and 4,508.28 is: 6,763.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    11,901.56 : 17,855.94 = 4,508.28 : x
  2. Step 2: Convert to fraction form
    11,901.56/17,855.94 = 4,508.28/x
  3. Step 3: Cross multiply
    11,901.56x = 17,855.94 × 4,508.28
  4. Step 4: Simplify right side
    11,901.56x = 80,499,577.18
  5. Step 5: Solve for x
    x = 80,499,577.18/11,901.56
  6. Step 6: Final answer
    x = 6,763.78

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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.