Finding the Fourth Proportional to 20,198,796.85, 27,874,518.02 and 11,497,529.80
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Solution
The fourth proportional to 20,198,796.85, 27,874,518.02 and 11,497,529.80 is: 15,866,692.65
Step by Step Solution
- Step 1: Write the proportion equation
20,198,796.85 : 27,874,518.02 = 11,497,529.80 : x - Step 2: Convert to fraction form
20,198,796.85/27,874,518.02 = 11,497,529.80/x - Step 3: Cross multiply
20,198,796.85x = 27,874,518.02 × 11,497,529.80 - Step 4: Simplify right side
20,198,796.85x = 320,488,101,595,587 - Step 5: Solve for x
x = 320,488,101,595,587/20,198,796.85 - Step 6: Final answer
x = 15,866,692.65
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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.