Finding the Fourth Proportional to 21,427,233.82, 29,564,982.39 and 12,728,339.26
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Solution
The fourth proportional to 21,427,233.82, 29,564,982.39 and 12,728,339.26 is: 17,562,375.49
Step by Step Solution
- Step 1: Write the proportion equation
21,427,233.82 : 29,564,982.39 = 12,728,339.26 : x - Step 2: Convert to fraction form
21,427,233.82/29,564,982.39 = 12,728,339.26/x - Step 3: Cross multiply
21,427,233.82x = 29,564,982.39 × 12,728,339.26 - Step 4: Simplify right side
21,427,233.82x = 376,313,126,075,845.62 - Step 5: Solve for x
x = 376,313,126,075,845.62/21,427,233.82 - Step 6: Final answer
x = 17,562,375.49
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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.