Finding the Fourth Proportional to 21,346,431.53, 29,446,049.49 and 13,503,514.19
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Solution
The fourth proportional to 21,346,431.53, 29,446,049.49 and 13,503,514.19 is: 18,627,242.06
Step by Step Solution
- Step 1: Write the proportion equation
21,346,431.53 : 29,446,049.49 = 13,503,514.19 : x - Step 2: Convert to fraction form
21,346,431.53/29,446,049.49 = 13,503,514.19/x - Step 3: Cross multiply
21,346,431.53x = 29,446,049.49 × 13,503,514.19 - Step 4: Simplify right side
21,346,431.53x = 397,625,147,127,657.25 - Step 5: Solve for x
x = 397,625,147,127,657.25/21,346,431.53 - Step 6: Final answer
x = 18,627,242.06
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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.