Finding the Fourth Proportional to 21,448,763.28, 29,599,578.90 and 11,659,357.62
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Solution
The fourth proportional to 21,448,763.28, 29,599,578.90 and 11,659,357.62 is: 16,090,068.75
Step by Step Solution
- Step 1: Write the proportion equation
21,448,763.28 : 29,599,578.90 = 11,659,357.62 : x - Step 2: Convert to fraction form
21,448,763.28/29,599,578.90 = 11,659,357.62/x - Step 3: Cross multiply
21,448,763.28x = 29,599,578.90 × 11,659,357.62 - Step 4: Simplify right side
21,448,763.28x = 345,112,075,796,506.19 - Step 5: Solve for x
x = 345,112,075,796,506.19/21,448,763.28 - Step 6: Final answer
x = 16,090,068.75
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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.