Finding the Fourth Proportional to 18,467,997.80, 27,701,996.70 and 8,390,301.80
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Solution
The fourth proportional to 18,467,997.80, 27,701,996.70 and 8,390,301.80 is: 12,585,452.70
Step by Step Solution
- Step 1: Write the proportion equation
18,467,997.80 : 27,701,996.70 = 8,390,301.80 : x - Step 2: Convert to fraction form
18,467,997.80/27,701,996.70 = 8,390,301.80/x - Step 3: Cross multiply
18,467,997.80x = 27,701,996.70 × 8,390,301.80 - Step 4: Simplify right side
18,467,997.80x = 232,428,112,775,604.06 - Step 5: Solve for x
x = 232,428,112,775,604.06/18,467,997.80 - Step 6: Final answer
x = 12,585,452.70
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1.5x scale
Why These Related Problems?
These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.