Finding the Fourth Proportional to 15,629,633.18, 21,568,872.58 and 8,660,762.09
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Solution
The fourth proportional to 15,629,633.18, 21,568,872.58 and 8,660,762.09 is: 11,951,839.93
Step by Step Solution
- Step 1: Write the proportion equation
15,629,633.18 : 21,568,872.58 = 8,660,762.09 : x - Step 2: Convert to fraction form
15,629,633.18/21,568,872.58 = 8,660,762.09/x - Step 3: Cross multiply
15,629,633.18x = 21,568,872.58 × 8,660,762.09 - Step 4: Simplify right side
15,629,633.18x = 186,802,873,916,291.47 - Step 5: Solve for x
x = 186,802,873,916,291.47/15,629,633.18 - Step 6: Final answer
x = 11,951,839.93
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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.