Home / 12,226.80-16,872.70-6,921.50

Finding the Fourth Proportional to 12,226.80, 16,872.70 and 6,921.50

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Solution

The fourth proportional to 12,226.80, 16,872.70 and 6,921.50 is: 9,551.51

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,226.80 : 16,872.70 = 6,921.50 : x
  2. Step 2: Convert to fraction form
    12,226.80/16,872.70 = 6,921.50/x
  3. Step 3: Cross multiply
    12,226.80x = 16,872.70 × 6,921.50
  4. Step 4: Simplify right side
    12,226.80x = 116,784,393.05
  5. Step 5: Solve for x
    x = 116,784,393.05/12,226.80
  6. Step 6: Final answer
    x = 9,551.51

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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.