Finding the Fourth Proportional to 21,156,860.16, 29,197,082.88 and 11,989,198.08
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Solution
The fourth proportional to 21,156,860.16, 29,197,082.88 and 11,989,198.08 is: 16,545,442.35
Step by Step Solution
- Step 1: Write the proportion equation
21,156,860.16 : 29,197,082.88 = 11,989,198.08 : x - Step 2: Convert to fraction form
21,156,860.16/29,197,082.88 = 11,989,198.08/x - Step 3: Cross multiply
21,156,860.16x = 29,197,082.88 × 11,989,198.08 - Step 4: Simplify right side
21,156,860.16x = 350,049,610,006,496.88 - Step 5: Solve for x
x = 350,049,610,006,496.88/21,156,860.16 - Step 6: Final answer
x = 16,545,442.35
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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.