Finding the Fourth Proportional to 21,678,837.18, 29,914,639.35 and 12,514,432.38
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Solution
The fourth proportional to 21,678,837.18, 29,914,639.35 and 12,514,432.38 is: 17,268,672.13
Step by Step Solution
- Step 1: Write the proportion equation
21,678,837.18 : 29,914,639.35 = 12,514,432.38 : x - Step 2: Convert to fraction form
21,678,837.18/29,914,639.35 = 12,514,432.38/x - Step 3: Cross multiply
21,678,837.18x = 29,914,639.35 × 12,514,432.38 - Step 4: Simplify right side
21,678,837.18x = 374,364,731,317,662.19 - Step 5: Solve for x
x = 374,364,731,317,662.19/21,678,837.18 - Step 6: Final answer
x = 17,268,672.13
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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.