Home / 12,205.35-18,307.78-3,885.95

Finding the Fourth Proportional to 12,205.35, 18,307.78 and 3,885.95

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Solution

The fourth proportional to 12,205.35, 18,307.78 and 3,885.95 is: 5,828.84

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,205.35 : 18,307.78 = 3,885.95 : x
  2. Step 2: Convert to fraction form
    12,205.35/18,307.78 = 3,885.95/x
  3. Step 3: Cross multiply
    12,205.35x = 18,307.78 × 3,885.95
  4. Step 4: Simplify right side
    12,205.35x = 71,143,016.44
  5. Step 5: Solve for x
    x = 71,143,016.44/12,205.35
  6. Step 6: Final answer
    x = 5,828.84

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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.