Finding the Fourth Proportional to 18,517,278.12, 27,775,837.85 and 4,684,367.80
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Solution
The fourth proportional to 18,517,278.12, 27,775,837.85 and 4,684,367.80 is: 7,026,531.63
Step by Step Solution
- Step 1: Write the proportion equation
18,517,278.12 : 27,775,837.85 = 4,684,367.80 : x - Step 2: Convert to fraction form
18,517,278.12/27,775,837.85 = 4,684,367.80/x - Step 3: Cross multiply
18,517,278.12x = 27,775,837.85 × 4,684,367.80 - Step 4: Simplify right side
18,517,278.12x = 130,112,240,442,561.23 - Step 5: Solve for x
x = 130,112,240,442,561.23/18,517,278.12 - Step 6: Final answer
x = 7,026,531.63
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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.