Finding the Fourth Proportional to 20,676,464.74, 28,542,352.80 and 14,719,716.88
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Solution
The fourth proportional to 20,676,464.74, 28,542,352.80 and 14,719,716.88 is: 20,319,496.47
Step by Step Solution
- Step 1: Write the proportion equation
20,676,464.74 : 28,542,352.80 = 14,719,716.88 : x - Step 2: Convert to fraction form
20,676,464.74/28,542,352.80 = 14,719,716.88/x - Step 3: Cross multiply
20,676,464.74x = 28,542,352.80 × 14,719,716.88 - Step 4: Simplify right side
20,676,464.74x = 420,135,352,305,075.31 - Step 5: Solve for x
x = 420,135,352,305,075.31/20,676,464.74 - Step 6: Final answer
x = 20,319,496.47
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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.