Finding the Fourth Proportional to 21,476,728.42, 29,637,889.60 and 11,818,936.42
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Solution
The fourth proportional to 21,476,728.42, 29,637,889.60 and 11,818,936.42 is: 16,310,134.67
Step by Step Solution
- Step 1: Write the proportion equation
21,476,728.42 : 29,637,889.60 = 11,818,936.42 : x - Step 2: Convert to fraction form
21,476,728.42/29,637,889.60 = 11,818,936.42/x - Step 3: Cross multiply
21,476,728.42x = 29,637,889.60 × 11,818,936.42 - Step 4: Simplify right side
21,476,728.42x = 350,288,332,627,642.44 - Step 5: Solve for x
x = 350,288,332,627,642.44/21,476,728.42 - Step 6: Final answer
x = 16,310,134.67
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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.