Home / 13,891.78-20,816.62-9,194.96

Finding the Fourth Proportional to 13,891.78, 20,816.62 and 9,194.96

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Solution

The fourth proportional to 13,891.78, 20,816.62 and 9,194.96 is: 13,778.51

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,891.78 : 20,816.62 = 9,194.96 : x
  2. Step 2: Convert to fraction form
    13,891.78/20,816.62 = 9,194.96/x
  3. Step 3: Cross multiply
    13,891.78x = 20,816.62 × 9,194.96
  4. Step 4: Simplify right side
    13,891.78x = 191,408,017.29
  5. Step 5: Solve for x
    x = 191,408,017.29/13,891.78
  6. Step 6: Final answer
    x = 13,778.51

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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.