Finding the Fourth Proportional to 21,146,445.51, 29,183,538.74 and 11,979,163.59
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Solution
The fourth proportional to 21,146,445.51, 29,183,538.74 and 11,979,163.59 is: 16,532,063.72
Step by Step Solution
- Step 1: Write the proportion equation
21,146,445.51 : 29,183,538.74 = 11,979,163.59 : x - Step 2: Convert to fraction form
21,146,445.51/29,183,538.74 = 11,979,163.59/x - Step 3: Cross multiply
21,146,445.51x = 29,183,538.74 × 11,979,163.59 - Step 4: Simplify right side
21,146,445.51x = 349,594,384,701,562.44 - Step 5: Solve for x
x = 349,594,384,701,562.44/21,146,445.51 - Step 6: Final answer
x = 16,532,063.72
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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.