Finding the Fourth Proportional to 18,255,919.80, 25,193,077.74 and 9,995,832.12
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Solution
The fourth proportional to 18,255,919.80, 25,193,077.74 and 9,995,832.12 is: 13,794,198.18
Step by Step Solution
- Step 1: Write the proportion equation
18,255,919.80 : 25,193,077.74 = 9,995,832.12 : x - Step 2: Convert to fraction form
18,255,919.80/25,193,077.74 = 9,995,832.12/x - Step 3: Cross multiply
18,255,919.80x = 25,193,077.74 × 9,995,832.12 - Step 4: Simplify right side
18,255,919.80x = 251,825,775,675,148.97 - Step 5: Solve for x
x = 251,825,775,675,148.97/18,255,919.80 - Step 6: Final answer
x = 13,794,198.18
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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.