Home / 11,922.54-16,438.30-7,934.91

Finding the Fourth Proportional to 11,922.54, 16,438.30 and 7,934.91

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Solution

The fourth proportional to 11,922.54, 16,438.30 and 7,934.91 is: 10,940.32

Step by Step Solution

  1. Step 1: Write the proportion equation
    11,922.54 : 16,438.30 = 7,934.91 : x
  2. Step 2: Convert to fraction form
    11,922.54/16,438.30 = 7,934.91/x
  3. Step 3: Cross multiply
    11,922.54x = 16,438.30 × 7,934.91
  4. Step 4: Simplify right side
    11,922.54x = 130,436,431.05
  5. Step 5: Solve for x
    x = 130,436,431.05/11,922.54
  6. Step 6: Final answer
    x = 10,940.32

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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.