Finding the Fourth Proportional to 12,780,338.21, 19,149,249.68 and 8,985,864.05
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Solution
The fourth proportional to 12,780,338.21, 19,149,249.68 and 8,985,864.05 is: 13,463,849.82
Step by Step Solution
- Step 1: Write the proportion equation
12,780,338.21 : 19,149,249.68 = 8,985,864.05 : x - Step 2: Convert to fraction form
12,780,338.21/19,149,249.68 = 8,985,864.05/x - Step 3: Cross multiply
12,780,338.21x = 19,149,249.68 × 8,985,864.05 - Step 4: Simplify right side
12,780,338.21x = 172,072,554,320,626.81 - Step 5: Solve for x
x = 172,072,554,320,626.81/12,780,338.21 - Step 6: Final answer
x = 13,463,849.82
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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.