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Finding the Fourth Proportional to 27,960.60, 41,940.90 and 11,328.60

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Solution

The fourth proportional to 27,960.60, 41,940.90 and 11,328.60 is: 16,992.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    27,960.60 : 41,940.90 = 11,328.60 : x
  2. Step 2: Convert to fraction form
    27,960.60/41,940.90 = 11,328.60/x
  3. Step 3: Cross multiply
    27,960.60x = 41,940.90 × 11,328.60
  4. Step 4: Simplify right side
    27,960.60x = 475,131,679.74
  5. Step 5: Solve for x
    x = 475,131,679.74/27,960.60
  6. Step 6: Final answer
    x = 16,992.90

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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.