Finding the Fourth Proportional to 20,261,167.62, 30,403,855.56 and 18,612,756.42
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Solution
The fourth proportional to 20,261,167.62, 30,403,855.56 and 18,612,756.42 is: 27,930,253.99
Step by Step Solution
- Step 1: Write the proportion equation
20,261,167.62 : 30,403,855.56 = 18,612,756.42 : x - Step 2: Convert to fraction form
20,261,167.62/30,403,855.56 = 18,612,756.42/x - Step 3: Cross multiply
20,261,167.62x = 30,403,855.56 × 18,612,756.42 - Step 4: Simplify right side
20,261,167.62x = 565,899,557,767,142.75 - Step 5: Solve for x
x = 565,899,557,767,142.75/20,261,167.62 - Step 6: Final answer
x = 27,930,253.99
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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.