Finding the Fourth Proportional to 15,479,678.96, 21,362,212.68 and 8,510,651.12
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Solution
The fourth proportional to 15,479,678.96, 21,362,212.68 and 8,510,651.12 is: 11,744,839.14
Step by Step Solution
- Step 1: Write the proportion equation
15,479,678.96 : 21,362,212.68 = 8,510,651.12 : x - Step 2: Convert to fraction form
15,479,678.96/21,362,212.68 = 8,510,651.12/x - Step 3: Cross multiply
15,479,678.96x = 21,362,212.68 × 8,510,651.12 - Step 4: Simplify right side
15,479,678.96x = 181,806,339,270,720.19 - Step 5: Solve for x
x = 181,806,339,270,720.19/15,479,678.96 - Step 6: Final answer
x = 11,744,839.14
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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.