Finding the Fourth Proportional to 21,235,883.87, 29,304,675.72 and 12,536,858.70
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Solution
The fourth proportional to 21,235,883.87, 29,304,675.72 and 12,536,858.70 is: 17,300,366.73
Step by Step Solution
- Step 1: Write the proportion equation
21,235,883.87 : 29,304,675.72 = 12,536,858.70 : x - Step 2: Convert to fraction form
21,235,883.87/29,304,675.72 = 12,536,858.70/x - Step 3: Cross multiply
21,235,883.87x = 29,304,675.72 × 12,536,858.70 - Step 4: Simplify right side
21,235,883.87x = 367,388,578,750,960.75 - Step 5: Solve for x
x = 367,388,578,750,960.75/21,235,883.87 - Step 6: Final answer
x = 17,300,366.73
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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.