Finding the Fourth Proportional to 15,304,159.40, 21,120,694.76 and 8,428,639.64
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Solution
The fourth proportional to 15,304,159.40, 21,120,694.76 and 8,428,639.64 is: 11,632,048.54
Step by Step Solution
- Step 1: Write the proportion equation
15,304,159.40 : 21,120,694.76 = 8,428,639.64 : x - Step 2: Convert to fraction form
15,304,159.40/21,120,694.76 = 8,428,639.64/x - Step 3: Cross multiply
15,304,159.40x = 21,120,694.76 × 8,428,639.64 - Step 4: Simplify right side
15,304,159.40x = 178,018,725,078,476.31 - Step 5: Solve for x
x = 178,018,725,078,476.31/15,304,159.40 - Step 6: Final answer
x = 11,632,048.54
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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.