Home / 12,855.60-19,284.84-4,087.44

Finding the Fourth Proportional to 12,855.60, 19,284.84 and 4,087.44

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Solution

The fourth proportional to 12,855.60, 19,284.84 and 4,087.44 is: 6,131.62

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,855.60 : 19,284.84 = 4,087.44 : x
  2. Step 2: Convert to fraction form
    12,855.60/19,284.84 = 4,087.44/x
  3. Step 3: Cross multiply
    12,855.60x = 19,284.84 × 4,087.44
  4. Step 4: Simplify right side
    12,855.60x = 78,825,626.41
  5. Step 5: Solve for x
    x = 78,825,626.41/12,855.60
  6. Step 6: Final answer
    x = 6,131.62

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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.