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Finding the Fourth Proportional to 11,893.68, 17,840.70 and 3,571.92

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Solution

The fourth proportional to 11,893.68, 17,840.70 and 3,571.92 is: 5,357.93

Step by Step Solution

  1. Step 1: Write the proportion equation
    11,893.68 : 17,840.70 = 3,571.92 : x
  2. Step 2: Convert to fraction form
    11,893.68/17,840.70 = 3,571.92/x
  3. Step 3: Cross multiply
    11,893.68x = 17,840.70 × 3,571.92
  4. Step 4: Simplify right side
    11,893.68x = 63,725,553.14
  5. Step 5: Solve for x
    x = 63,725,553.14/11,893.68
  6. Step 6: Final answer
    x = 5,357.93

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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.