Finding the Fourth Proportional to 21,026,157.66, 29,029,232.79 and 16,121,953.53
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Solution
The fourth proportional to 21,026,157.66, 29,029,232.79 and 16,121,953.53 is: 22,258,367.39
Step by Step Solution
- Step 1: Write the proportion equation
21,026,157.66 : 29,029,232.79 = 16,121,953.53 : x - Step 2: Convert to fraction form
21,026,157.66/29,029,232.79 = 16,121,953.53/x - Step 3: Cross multiply
21,026,157.66x = 29,029,232.79 × 16,121,953.53 - Step 4: Simplify right side
21,026,157.66x = 468,007,942,051,932.19 - Step 5: Solve for x
x = 468,007,942,051,932.19/21,026,157.66 - Step 6: Final answer
x = 22,258,367.39
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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.