Finding the Fourth Proportional to 21,147,121.93, 29,183,028.24 and 11,979,764.68
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Solution
The fourth proportional to 21,147,121.93, 29,183,028.24 and 11,979,764.68 is: 16,532,075.25
Step by Step Solution
- Step 1: Write the proportion equation
21,147,121.93 : 29,183,028.24 = 11,979,764.68 : x - Step 2: Convert to fraction form
21,147,121.93/29,183,028.24 = 11,979,764.68/x - Step 3: Cross multiply
21,147,121.93x = 29,183,028.24 × 11,979,764.68 - Step 4: Simplify right side
21,147,121.93x = 349,605,810,964,994.56 - Step 5: Solve for x
x = 349,605,810,964,994.56/21,147,121.93 - Step 6: Final answer
x = 16,532,075.25
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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.