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Finding the Fourth Proportional to 21,846.08, 30,147.52 and 11,910.08

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Solution

The fourth proportional to 21,846.08, 30,147.52 and 11,910.08 is: 16,435.87

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,846.08 : 30,147.52 = 11,910.08 : x
  2. Step 2: Convert to fraction form
    21,846.08/30,147.52 = 11,910.08/x
  3. Step 3: Cross multiply
    21,846.08x = 30,147.52 × 11,910.08
  4. Step 4: Simplify right side
    21,846.08x = 359,059,375.00
  5. Step 5: Solve for x
    x = 359,059,375.00/21,846.08
  6. Step 6: Final answer
    x = 16,435.87

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.