Finding the Fourth Proportional to 21,347,190.70, 29,458,771.50 and 11,557,556.62
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Solution
The fourth proportional to 21,347,190.70, 29,458,771.50 and 11,557,556.62 is: 15,949,237.74
Step by Step Solution
- Step 1: Write the proportion equation
21,347,190.70 : 29,458,771.50 = 11,557,556.62 : x - Step 2: Convert to fraction form
21,347,190.70/29,458,771.50 = 11,557,556.62/x - Step 3: Cross multiply
21,347,190.70x = 29,458,771.50 × 11,557,556.62 - Step 4: Simplify right side
21,347,190.70x = 340,471,419,566,892.31 - Step 5: Solve for x
x = 340,471,419,566,892.31/21,347,190.70 - Step 6: Final answer
x = 15,949,237.74
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1.5x scale
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.