Finding the Fourth Proportional to 13,718,647.54, 18,930,369.58 and 7,919,297.63
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Solution
The fourth proportional to 13,718,647.54, 18,930,369.58 and 7,919,297.63 is: 10,927,843.32
Step by Step Solution
- Step 1: Write the proportion equation
13,718,647.54 : 18,930,369.58 = 7,919,297.63 : x - Step 2: Convert to fraction form
13,718,647.54/18,930,369.58 = 7,919,297.63/x - Step 3: Cross multiply
13,718,647.54x = 18,930,369.58 × 7,919,297.63 - Step 4: Simplify right side
13,718,647.54x = 149,915,230,970,831.19 - Step 5: Solve for x
x = 149,915,230,970,831.19/13,718,647.54 - Step 6: Final answer
x = 10,927,843.32
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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.