Home / 11,891.78-17,838.57-3,571.16

Finding the Fourth Proportional to 11,891.78, 17,838.57 and 3,571.16

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Solution

The fourth proportional to 11,891.78, 17,838.57 and 3,571.16 is: 5,357.01

Step by Step Solution

  1. Step 1: Write the proportion equation
    11,891.78 : 17,838.57 = 3,571.16 : x
  2. Step 2: Convert to fraction form
    11,891.78/17,838.57 = 3,571.16/x
  3. Step 3: Cross multiply
    11,891.78x = 17,838.57 × 3,571.16
  4. Step 4: Simplify right side
    11,891.78x = 63,704,298.45
  5. Step 5: Solve for x
    x = 63,704,298.45/11,891.78
  6. Step 6: Final answer
    x = 5,357.01

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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.