Finding the Fourth Proportional to 20,431,649.43, 28,194,400.74 and 11,264,292.18
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Solution
The fourth proportional to 20,431,649.43, 28,194,400.74 and 11,264,292.18 is: 15,544,020.02
Step by Step Solution
- Step 1: Write the proportion equation
20,431,649.43 : 28,194,400.74 = 11,264,292.18 : x - Step 2: Convert to fraction form
20,431,649.43/28,194,400.74 = 11,264,292.18/x - Step 3: Cross multiply
20,431,649.43x = 28,194,400.74 × 11,264,292.18 - Step 4: Simplify right side
20,431,649.43x = 317,589,967,775,368.19 - Step 5: Solve for x
x = 317,589,967,775,368.19/20,431,649.43 - Step 6: Final answer
x = 15,544,020.02
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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.