Home / 12,121.62-16,727.22-6,818.10

Finding the Fourth Proportional to 12,121.62, 16,727.22 and 6,818.10

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Solution

The fourth proportional to 12,121.62, 16,727.22 and 6,818.10 is: 9,408.63

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,121.62 : 16,727.22 = 6,818.10 : x
  2. Step 2: Convert to fraction form
    12,121.62/16,727.22 = 6,818.10/x
  3. Step 3: Cross multiply
    12,121.62x = 16,727.22 × 6,818.10
  4. Step 4: Simplify right side
    12,121.62x = 114,047,858.68
  5. Step 5: Solve for x
    x = 114,047,858.68/12,121.62
  6. Step 6: Final answer
    x = 9,408.63

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.