Home / 11,280.12-16,919.94-3,072.12

Finding the Fourth Proportional to 11,280.12, 16,919.94 and 3,072.12

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Solution

The fourth proportional to 11,280.12, 16,919.94 and 3,072.12 is: 4,608.11

Step by Step Solution

  1. Step 1: Write the proportion equation
    11,280.12 : 16,919.94 = 3,072.12 : x
  2. Step 2: Convert to fraction form
    11,280.12/16,919.94 = 3,072.12/x
  3. Step 3: Cross multiply
    11,280.12x = 16,919.94 × 3,072.12
  4. Step 4: Simplify right side
    11,280.12x = 51,980,086.07
  5. Step 5: Solve for x
    x = 51,980,086.07/11,280.12
  6. Step 6: Final answer
    x = 4,608.11

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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.