Finding the Fourth Proportional to 27,679,193.82, 38,197,135.26 and 15,290,139.60
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Solution
The fourth proportional to 27,679,193.82, 38,197,135.26 and 15,290,139.60 is: 21,100,308.57
Step by Step Solution
- Step 1: Write the proportion equation
27,679,193.82 : 38,197,135.26 = 15,290,139.60 : x - Step 2: Convert to fraction form
27,679,193.82/38,197,135.26 = 15,290,139.60/x - Step 3: Cross multiply
27,679,193.82x = 38,197,135.26 × 15,290,139.60 - Step 4: Simplify right side
27,679,193.82x = 584,039,530,445,482.25 - Step 5: Solve for x
x = 584,039,530,445,482.25/27,679,193.82 - Step 6: Final answer
x = 21,100,308.57
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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.