Finding the Fourth Proportional to 15,578,936.99, 21,497,806.72 and 8,609,531.14
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Solution
The fourth proportional to 15,578,936.99, 21,497,806.72 and 8,609,531.14 is: 11,880,530.52
Step by Step Solution
- Step 1: Write the proportion equation
15,578,936.99 : 21,497,806.72 = 8,609,531.14 : x - Step 2: Convert to fraction form
15,578,936.99/21,497,806.72 = 8,609,531.14/x - Step 3: Cross multiply
15,578,936.99x = 21,497,806.72 × 8,609,531.14 - Step 4: Simplify right side
15,578,936.99x = 185,086,036,435,175.44 - Step 5: Solve for x
x = 185,086,036,435,175.44/15,578,936.99 - Step 6: Final answer
x = 11,880,530.52
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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.