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Finding the Fourth Proportional to 21,229, 29,296.04 and 11,798.44

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Solution

The fourth proportional to 21,229, 29,296.04 and 11,798.44 is: 16,281.86

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,229 : 29,296.04 = 11,798.44 : x
  2. Step 2: Convert to fraction form
    21,229/29,296.04 = 11,798.44/x
  3. Step 3: Cross multiply
    21,229x = 29,296.04 × 11,798.44
  4. Step 4: Simplify right side
    21,229x = 345,647,570.18
  5. Step 5: Solve for x
    x = 345,647,570.18/21,229
  6. Step 6: Final answer
    x = 16,281.86

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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.