Finding the Fourth Proportional to 21,477,102.53, 29,638,406.31 and 11,819,310.53
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Solution
The fourth proportional to 21,477,102.53, 29,638,406.31 and 11,819,310.53 is: 16,310,651.18
Step by Step Solution
- Step 1: Write the proportion equation
21,477,102.53 : 29,638,406.31 = 11,819,310.53 : x - Step 2: Convert to fraction form
21,477,102.53/29,638,406.31 = 11,819,310.53/x - Step 3: Cross multiply
21,477,102.53x = 29,638,406.31 × 11,819,310.53 - Step 4: Simplify right side
21,477,102.53x = 350,305,527,584,912.88 - Step 5: Solve for x
x = 350,305,527,584,912.88/21,477,102.53 - Step 6: Final answer
x = 16,310,651.18
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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.