Finding the Fourth Proportional to 21,656,939.91, 29,883,732.62 and 12,951,936.33
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Solution
The fourth proportional to 21,656,939.91, 29,883,732.62 and 12,951,936.33 is: 17,871,971.01
Step by Step Solution
- Step 1: Write the proportion equation
21,656,939.91 : 29,883,732.62 = 12,951,936.33 : x - Step 2: Convert to fraction form
21,656,939.91/29,883,732.62 = 12,951,936.33/x - Step 3: Cross multiply
21,656,939.91x = 29,883,732.62 × 12,951,936.33 - Step 4: Simplify right side
21,656,939.91x = 387,052,202,132,224.38 - Step 5: Solve for x
x = 387,052,202,132,224.38/21,656,939.91 - Step 6: Final answer
x = 17,871,971.01
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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.