Finding the Fourth Proportional to 15,307,322.98, 21,124,106.87 and 8,431,805.05
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Solution
The fourth proportional to 15,307,322.98, 21,124,106.87 and 8,431,805.05 is: 11,635,891.61
Step by Step Solution
- Step 1: Write the proportion equation
15,307,322.98 : 21,124,106.87 = 8,431,805.05 : x - Step 2: Convert to fraction form
15,307,322.98/21,124,106.87 = 8,431,805.05/x - Step 3: Cross multiply
15,307,322.98x = 21,124,106.87 × 8,431,805.05 - Step 4: Simplify right side
15,307,322.98x = 178,114,350,983,205.72 - Step 5: Solve for x
x = 178,114,350,983,205.72/15,307,322.98 - Step 6: Final answer
x = 11,635,891.61
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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.