Finding the Fourth Proportional to 13,310,403.06, 18,368,368.47 and 7,198,831.56
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Solution
The fourth proportional to 13,310,403.06, 18,368,368.47 and 7,198,831.56 is: 9,934,394.18
Step by Step Solution
- Step 1: Write the proportion equation
13,310,403.06 : 18,368,368.47 = 7,198,831.56 : x - Step 2: Convert to fraction form
13,310,403.06/18,368,368.47 = 7,198,831.56/x - Step 3: Cross multiply
13,310,403.06x = 18,368,368.47 × 7,198,831.56 - Step 4: Simplify right side
13,310,403.06x = 132,230,790,647,544.89 - Step 5: Solve for x
x = 132,230,790,647,544.89/13,310,403.06 - Step 6: Final answer
x = 9,934,394.18
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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.