Home / 11,922.30-17,872.80-4,521.74

Finding the Fourth Proportional to 11,922.30, 17,872.80 and 4,521.74

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Solution

The fourth proportional to 11,922.30, 17,872.80 and 4,521.74 is: 6,778.56

Step by Step Solution

  1. Step 1: Write the proportion equation
    11,922.30 : 17,872.80 = 4,521.74 : x
  2. Step 2: Convert to fraction form
    11,922.30/17,872.80 = 4,521.74/x
  3. Step 3: Cross multiply
    11,922.30x = 17,872.80 × 4,521.74
  4. Step 4: Simplify right side
    11,922.30x = 80,816,065.31
  5. Step 5: Solve for x
    x = 80,816,065.31/11,922.30
  6. Step 6: Final answer
    x = 6,778.56

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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.