Finding the Fourth Proportional to 21,458,428.44, 29,613,409.95 and 12,292,842.66
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Solution
The fourth proportional to 21,458,428.44, 29,613,409.95 and 12,292,842.66 is: 16,964,568.96
Step by Step Solution
- Step 1: Write the proportion equation
21,458,428.44 : 29,613,409.95 = 12,292,842.66 : x - Step 2: Convert to fraction form
21,458,428.44/29,613,409.95 = 12,292,842.66/x - Step 3: Cross multiply
21,458,428.44x = 29,613,409.95 × 12,292,842.66 - Step 4: Simplify right side
21,458,428.44x = 364,032,989,076,476.31 - Step 5: Solve for x
x = 364,032,989,076,476.31/21,458,428.44 - Step 6: Final answer
x = 16,964,568.96
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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.