Finding the Fourth Proportional to 15,304,450.64, 21,121,097.04 and 8,428,930.88
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Solution
The fourth proportional to 15,304,450.64, 21,121,097.04 and 8,428,930.88 is: 11,632,450.67
Step by Step Solution
- Step 1: Write the proportion equation
15,304,450.64 : 21,121,097.04 = 8,428,930.88 : x - Step 2: Convert to fraction form
15,304,450.64/21,121,097.04 = 8,428,930.88/x - Step 3: Cross multiply
15,304,450.64x = 21,121,097.04 × 8,428,930.88 - Step 4: Simplify right side
15,304,450.64x = 178,028,267,059,932.59 - Step 5: Solve for x
x = 178,028,267,059,932.59/15,304,450.64 - Step 6: Final answer
x = 11,632,450.67
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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.