Finding the Fourth Proportional to 12,982,397.91, 17,821,893.04 and 11,143,663.99
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Solution
The fourth proportional to 12,982,397.91, 17,821,893.04 and 11,143,663.99 is: 15,297,727.66
Step by Step Solution
- Step 1: Write the proportion equation
12,982,397.91 : 17,821,893.04 = 11,143,663.99 : x - Step 2: Convert to fraction form
12,982,397.91/17,821,893.04 = 11,143,663.99/x - Step 3: Cross multiply
12,982,397.91x = 17,821,893.04 × 11,143,663.99 - Step 4: Simplify right side
12,982,397.91x = 198,601,187,558,651.84 - Step 5: Solve for x
x = 198,601,187,558,651.84/12,982,397.91 - Step 6: Final answer
x = 15,297,727.66
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Why These Related Problems?
These problems maintain the same ratio (1.37) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.