Home / 11,845.54-17,755.68-8,914.78

Finding the Fourth Proportional to 11,845.54, 17,755.68 and 8,914.78

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Solution

The fourth proportional to 11,845.54, 17,755.68 and 8,914.78 is: 13,362.66

Step by Step Solution

  1. Step 1: Write the proportion equation
    11,845.54 : 17,755.68 = 8,914.78 : x
  2. Step 2: Convert to fraction form
    11,845.54/17,755.68 = 8,914.78/x
  3. Step 3: Cross multiply
    11,845.54x = 17,755.68 × 8,914.78
  4. Step 4: Simplify right side
    11,845.54x = 158,287,980.95
  5. Step 5: Solve for x
    x = 158,287,980.95/11,845.54
  6. Step 6: Final answer
    x = 13,362.66

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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.