Finding the Fourth Proportional to 13,418,636.40, 18,504,897.84 and 9,018,301.68
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Solution
The fourth proportional to 13,418,636.40, 18,504,897.84 and 9,018,301.68 is: 12,436,640.08
Step by Step Solution
- Step 1: Write the proportion equation
13,418,636.40 : 18,504,897.84 = 9,018,301.68 : x - Step 2: Convert to fraction form
13,418,636.40/18,504,897.84 = 9,018,301.68/x - Step 3: Cross multiply
13,418,636.40x = 18,504,897.84 × 9,018,301.68 - Step 4: Simplify right side
13,418,636.40x = 166,882,751,278,700.38 - Step 5: Solve for x
x = 166,882,751,278,700.38/13,418,636.40 - Step 6: Final answer
x = 12,436,640.08
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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.