Finding the Fourth Proportional to 18,566,638.40, 27,840,801.36 and 7,634,831.42
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Solution
The fourth proportional to 18,566,638.40, 27,840,801.36 and 7,634,831.42 is: 11,448,481.97
Step by Step Solution
- Step 1: Write the proportion equation
18,566,638.40 : 27,840,801.36 = 7,634,831.42 : x - Step 2: Convert to fraction form
18,566,638.40/27,840,801.36 = 7,634,831.42/x - Step 3: Cross multiply
18,566,638.40x = 27,840,801.36 × 7,634,831.42 - Step 4: Simplify right side
18,566,638.40x = 212,559,824,981,306.72 - Step 5: Solve for x
x = 212,559,824,981,306.72/18,566,638.40 - Step 6: Final answer
x = 11,448,481.97
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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.