Finding the Fourth Proportional to 21,669,251.24, 29,902,919.40 and 11,879,360.84
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Solution
The fourth proportional to 21,669,251.24, 29,902,919.40 and 11,879,360.84 is: 16,393,163.09
Step by Step Solution
- Step 1: Write the proportion equation
21,669,251.24 : 29,902,919.40 = 11,879,360.84 : x - Step 2: Convert to fraction form
21,669,251.24/29,902,919.40 = 11,879,360.84/x - Step 3: Cross multiply
21,669,251.24x = 29,902,919.40 × 11,879,360.84 - Step 4: Simplify right side
21,669,251.24x = 355,227,569,722,036.25 - Step 5: Solve for x
x = 355,227,569,722,036.25/21,669,251.24 - Step 6: Final answer
x = 16,393,163.09
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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.