Finding the Fourth Proportional to 21,651,644.63, 29,879,020.50 and 11,728,337.84
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Solution
The fourth proportional to 21,651,644.63, 29,879,020.50 and 11,728,337.84 is: 16,184,971.30
Step by Step Solution
- Step 1: Write the proportion equation
21,651,644.63 : 29,879,020.50 = 11,728,337.84 : x - Step 2: Convert to fraction form
21,651,644.63/29,879,020.50 = 11,728,337.84/x - Step 3: Cross multiply
21,651,644.63x = 29,879,020.50 × 11,728,337.84 - Step 4: Simplify right side
21,651,644.63x = 350,431,246,839,025.12 - Step 5: Solve for x
x = 350,431,246,839,025.12/21,651,644.63 - Step 6: Final answer
x = 16,184,971.30
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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.