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Finding the Fourth Proportional to 11,811.98, 17,705.81 and 5,241.26

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Solution

The fourth proportional to 11,811.98, 17,705.81 and 5,241.26 is: 7,856.49

Step by Step Solution

  1. Step 1: Write the proportion equation
    11,811.98 : 17,705.81 = 5,241.26 : x
  2. Step 2: Convert to fraction form
    11,811.98/17,705.81 = 5,241.26/x
  3. Step 3: Cross multiply
    11,811.98x = 17,705.81 × 5,241.26
  4. Step 4: Simplify right side
    11,811.98x = 92,800,753.72
  5. Step 5: Solve for x
    x = 92,800,753.72/11,811.98
  6. Step 6: Final answer
    x = 7,856.49

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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.