Home / 11,178-16,766.48-3,280.19

Finding the Fourth Proportional to 11,178, 16,766.48 and 3,280.19

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Solution

The fourth proportional to 11,178, 16,766.48 and 3,280.19 is: 4,920.13

Step by Step Solution

  1. Step 1: Write the proportion equation
    11,178 : 16,766.48 = 3,280.19 : x
  2. Step 2: Convert to fraction form
    11,178/16,766.48 = 3,280.19/x
  3. Step 3: Cross multiply
    11,178x = 16,766.48 × 3,280.19
  4. Step 4: Simplify right side
    11,178x = 54,997,240.03
  5. Step 5: Solve for x
    x = 54,997,240.03/11,178
  6. Step 6: Final answer
    x = 4,920.13

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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.