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Finding the Fourth Proportional to 11,357.78, 17,039.50 and 11,169.43

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Solution

The fourth proportional to 11,357.78, 17,039.50 and 11,169.43 is: 16,756.93

Step by Step Solution

  1. Step 1: Write the proportion equation
    11,357.78 : 17,039.50 = 11,169.43 : x
  2. Step 2: Convert to fraction form
    11,357.78/17,039.50 = 11,169.43/x
  3. Step 3: Cross multiply
    11,357.78x = 17,039.50 × 11,169.43
  4. Step 4: Simplify right side
    11,357.78x = 190,321,431.96
  5. Step 5: Solve for x
    x = 190,321,431.96/11,357.78
  6. Step 6: Final answer
    x = 16,756.93

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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.