Finding the Fourth Proportional to 15,305,579.09, 21,121,720.71 and 8,336,283.92
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Solution
The fourth proportional to 15,305,579.09, 21,121,720.71 and 8,336,283.92 is: 11,504,083.56
Step by Step Solution
- Step 1: Write the proportion equation
15,305,579.09 : 21,121,720.71 = 8,336,283.92 : x - Step 2: Convert to fraction form
15,305,579.09/21,121,720.71 = 8,336,283.92/x - Step 3: Cross multiply
15,305,579.09x = 21,121,720.71 × 8,336,283.92 - Step 4: Simplify right side
15,305,579.09x = 176,076,660,717,504 - Step 5: Solve for x
x = 176,076,660,717,504/15,305,579.09 - Step 6: Final answer
x = 11,504,083.56
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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.