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Finding the Fourth Proportional to 11,157.90, 16,744.94 and 8,992.78

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Solution

The fourth proportional to 11,157.90, 16,744.94 and 8,992.78 is: 13,495.69

Step by Step Solution

  1. Step 1: Write the proportion equation
    11,157.90 : 16,744.94 = 8,992.78 : x
  2. Step 2: Convert to fraction form
    11,157.90/16,744.94 = 8,992.78/x
  3. Step 3: Cross multiply
    11,157.90x = 16,744.94 × 8,992.78
  4. Step 4: Simplify right side
    11,157.90x = 150,583,561.53
  5. Step 5: Solve for x
    x = 150,583,561.53/11,157.90
  6. Step 6: Final answer
    x = 13,495.69

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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.