Home / 20,816,872.84-28,723,506.42-11,994,949

Finding the Fourth Proportional to 20,816,872.84, 28,723,506.42 and 11,994,949

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Solution

The fourth proportional to 20,816,872.84, 28,723,506.42 and 11,994,949 is: 16,550,852.63

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,816,872.84 : 28,723,506.42 = 11,994,949 : x
  2. Step 2: Convert to fraction form
    20,816,872.84/28,723,506.42 = 11,994,949/x
  3. Step 3: Cross multiply
    20,816,872.84x = 28,723,506.42 × 11,994,949
  4. Step 4: Simplify right side
    20,816,872.84x = 344,536,994,609,072.62
  5. Step 5: Solve for x
    x = 344,536,994,609,072.62/20,816,872.84
  6. Step 6: Final answer
    x = 16,550,852.63

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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.