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Finding the Fourth Proportional to 19,873.44, 29,763.44 and 11,671.20

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Solution

The fourth proportional to 19,873.44, 29,763.44 and 11,671.20 is: 17,479.36

Step by Step Solution

  1. Step 1: Write the proportion equation
    19,873.44 : 29,763.44 = 11,671.20 : x
  2. Step 2: Convert to fraction form
    19,873.44/29,763.44 = 11,671.20/x
  3. Step 3: Cross multiply
    19,873.44x = 29,763.44 × 11,671.20
  4. Step 4: Simplify right side
    19,873.44x = 347,375,060.93
  5. Step 5: Solve for x
    x = 347,375,060.93/19,873.44
  6. Step 6: Final answer
    x = 17,479.36

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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.