Finding the Fourth Proportional to 15,066,397.36, 20,791,864.92 and 8,190,905.68
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Solution
The fourth proportional to 15,066,397.36, 20,791,864.92 and 8,190,905.68 is: 11,303,578.45
Step by Step Solution
- Step 1: Write the proportion equation
15,066,397.36 : 20,791,864.92 = 8,190,905.68 : x - Step 2: Convert to fraction form
15,066,397.36/20,791,864.92 = 8,190,905.68/x - Step 3: Cross multiply
15,066,397.36x = 20,791,864.92 × 8,190,905.68 - Step 4: Simplify right side
15,066,397.36x = 170,304,204,471,020.75 - Step 5: Solve for x
x = 170,304,204,471,020.75/15,066,397.36 - Step 6: Final answer
x = 11,303,578.45
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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.