Home / 11,211.73-16,821.23-5,368.75

Finding the Fourth Proportional to 11,211.73, 16,821.23 and 5,368.75

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Solution

The fourth proportional to 11,211.73, 16,821.23 and 5,368.75 is: 8,054.87

Step by Step Solution

  1. Step 1: Write the proportion equation
    11,211.73 : 16,821.23 = 5,368.75 : x
  2. Step 2: Convert to fraction form
    11,211.73/16,821.23 = 5,368.75/x
  3. Step 3: Cross multiply
    11,211.73x = 16,821.23 × 5,368.75
  4. Step 4: Simplify right side
    11,211.73x = 90,308,978.56
  5. Step 5: Solve for x
    x = 90,308,978.56/11,211.73
  6. Step 6: Final answer
    x = 8,054.87

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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.