Finding the Fourth Proportional to 21,442,623.20, 32,163,934.80 and 20,397,528.80
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Solution
The fourth proportional to 21,442,623.20, 32,163,934.80 and 20,397,528.80 is: 30,596,293.20
Step by Step Solution
- Step 1: Write the proportion equation
21,442,623.20 : 32,163,934.80 = 20,397,528.80 : x - Step 2: Convert to fraction form
21,442,623.20/32,163,934.80 = 20,397,528.80/x - Step 3: Cross multiply
21,442,623.20x = 32,163,934.80 × 20,397,528.80 - Step 4: Simplify right side
21,442,623.20x = 656,064,786,404,322.25 - Step 5: Solve for x
x = 656,064,786,404,322.25/21,442,623.20 - Step 6: Final answer
x = 30,596,293.20
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Why These Related Problems?
These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.