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Finding the Fourth Proportional to 11,803.41, 17,722.56 and 7,879.12

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Solution

The fourth proportional to 11,803.41, 17,722.56 and 7,879.12 is: 11,830.33

Step by Step Solution

  1. Step 1: Write the proportion equation
    11,803.41 : 17,722.56 = 7,879.12 : x
  2. Step 2: Convert to fraction form
    11,803.41/17,722.56 = 7,879.12/x
  3. Step 3: Cross multiply
    11,803.41x = 17,722.56 × 7,879.12
  4. Step 4: Simplify right side
    11,803.41x = 139,638,176.95
  5. Step 5: Solve for x
    x = 139,638,176.95/11,803.41
  6. Step 6: Final answer
    x = 11,830.33

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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.