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Finding the Fourth Proportional to 19,994.45, 29,975.48 and 8,316.41

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Solution

The fourth proportional to 19,994.45, 29,975.48 and 8,316.41 is: 12,467.88

Step by Step Solution

  1. Step 1: Write the proportion equation
    19,994.45 : 29,975.48 = 8,316.41 : x
  2. Step 2: Convert to fraction form
    19,994.45/29,975.48 = 8,316.41/x
  3. Step 3: Cross multiply
    19,994.45x = 29,975.48 × 8,316.41
  4. Step 4: Simplify right side
    19,994.45x = 249,288,414.98
  5. Step 5: Solve for x
    x = 249,288,414.98/19,994.45
  6. Step 6: Final answer
    x = 12,467.88

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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.