Finding the Fourth Proportional to 15,407,052.18, 21,261,470.31 and 8,531,386.62
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Solution
The fourth proportional to 15,407,052.18, 21,261,470.31 and 8,531,386.62 is: 11,773,168.62
Step by Step Solution
- Step 1: Write the proportion equation
15,407,052.18 : 21,261,470.31 = 8,531,386.62 : x - Step 2: Convert to fraction form
15,407,052.18/21,261,470.31 = 8,531,386.62/x - Step 3: Cross multiply
15,407,052.18x = 21,261,470.31 × 8,531,386.62 - Step 4: Simplify right side
15,407,052.18x = 181,389,823,324,261.22 - Step 5: Solve for x
x = 181,389,823,324,261.22/15,407,052.18 - Step 6: Final answer
x = 11,773,168.62
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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.