Home / 12,226.36-16,872.78-6,921.06

Finding the Fourth Proportional to 12,226.36, 16,872.78 and 6,921.06

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Solution

The fourth proportional to 12,226.36, 16,872.78 and 6,921.06 is: 9,551.29

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,226.36 : 16,872.78 = 6,921.06 : x
  2. Step 2: Convert to fraction form
    12,226.36/16,872.78 = 6,921.06/x
  3. Step 3: Cross multiply
    12,226.36x = 16,872.78 × 6,921.06
  4. Step 4: Simplify right side
    12,226.36x = 116,777,517.88
  5. Step 5: Solve for x
    x = 116,777,517.88/12,226.36
  6. Step 6: Final answer
    x = 9,551.29

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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.