Home / 11,280.75-16,921.13-3,072.75

Finding the Fourth Proportional to 11,280.75, 16,921.13 and 3,072.75

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Solution

The fourth proportional to 11,280.75, 16,921.13 and 3,072.75 is: 4,609.13

Step by Step Solution

  1. Step 1: Write the proportion equation
    11,280.75 : 16,921.13 = 3,072.75 : x
  2. Step 2: Convert to fraction form
    11,280.75/16,921.13 = 3,072.75/x
  3. Step 3: Cross multiply
    11,280.75x = 16,921.13 × 3,072.75
  4. Step 4: Simplify right side
    11,280.75x = 51,994,386.84
  5. Step 5: Solve for x
    x = 51,994,386.84/11,280.75
  6. Step 6: Final answer
    x = 4,609.13

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Similar ratio
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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.