Home / 11,274.70-16,891.80-5,418.40

Finding the Fourth Proportional to 11,274.70, 16,891.80 and 5,418.40

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Solution

The fourth proportional to 11,274.70, 16,891.80 and 5,418.40 is: 8,117.87

Step by Step Solution

  1. Step 1: Write the proportion equation
    11,274.70 : 16,891.80 = 5,418.40 : x
  2. Step 2: Convert to fraction form
    11,274.70/16,891.80 = 5,418.40/x
  3. Step 3: Cross multiply
    11,274.70x = 16,891.80 × 5,418.40
  4. Step 4: Simplify right side
    11,274.70x = 91,526,529.12
  5. Step 5: Solve for x
    x = 91,526,529.12/11,274.70
  6. Step 6: Final answer
    x = 8,117.87

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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.