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Finding the Fourth Proportional to 21,675.52, 29,912.25 and 12,244.11

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Solution

The fourth proportional to 21,675.52, 29,912.25 and 12,244.11 is: 16,896.89

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,675.52 : 29,912.25 = 12,244.11 : x
  2. Step 2: Convert to fraction form
    21,675.52/29,912.25 = 12,244.11/x
  3. Step 3: Cross multiply
    21,675.52x = 29,912.25 × 12,244.11
  4. Step 4: Simplify right side
    21,675.52x = 366,248,879.35
  5. Step 5: Solve for x
    x = 366,248,879.35/21,675.52
  6. Step 6: Final answer
    x = 16,896.89

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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.