Finding the Fourth Proportional to 18,664,332.26, 27,990,446.47 and 7,149,186.77
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Solution
The fourth proportional to 18,664,332.26, 27,990,446.47 and 7,149,186.77 is: 10,721,462.02
Step by Step Solution
- Step 1: Write the proportion equation
18,664,332.26 : 27,990,446.47 = 7,149,186.77 : x - Step 2: Convert to fraction form
18,664,332.26/27,990,446.47 = 7,149,186.77/x - Step 3: Cross multiply
18,664,332.26x = 27,990,446.47 × 7,149,186.77 - Step 4: Simplify right side
18,664,332.26x = 200,108,929,431,892 - Step 5: Solve for x
x = 200,108,929,431,892/18,664,332.26 - Step 6: Final answer
x = 10,721,462.02
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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.