Finding the Fourth Proportional to 13,713,968.70, 18,922,611.84 and 8,131,183.96
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Solution
The fourth proportional to 13,713,968.70, 18,922,611.84 and 8,131,183.96 is: 11,219,453.77
Step by Step Solution
- Step 1: Write the proportion equation
13,713,968.70 : 18,922,611.84 = 8,131,183.96 : x - Step 2: Convert to fraction form
13,713,968.70/18,922,611.84 = 8,131,183.96/x - Step 3: Cross multiply
13,713,968.70x = 18,922,611.84 × 8,131,183.96 - Step 4: Simplify right side
13,713,968.70x = 153,863,237,874,714.09 - Step 5: Solve for x
x = 153,863,237,874,714.09/13,713,968.70 - Step 6: Final answer
x = 11,219,453.77
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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.