Finding the Fourth Proportional to 20,972,231.68, 28,942,577.64 and 11,679,801.68
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Solution
The fourth proportional to 20,972,231.68, 28,942,577.64 and 11,679,801.68 is: 16,118,626.39
Step by Step Solution
- Step 1: Write the proportion equation
20,972,231.68 : 28,942,577.64 = 11,679,801.68 : x - Step 2: Convert to fraction form
20,972,231.68/28,942,577.64 = 11,679,801.68/x - Step 3: Cross multiply
20,972,231.68x = 28,942,577.64 × 11,679,801.68 - Step 4: Simplify right side
20,972,231.68x = 338,043,566,943,202.44 - Step 5: Solve for x
x = 338,043,566,943,202.44/20,972,231.68 - Step 6: Final answer
x = 16,118,626.39
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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.