Finding the Fourth Proportional to 22,639,442.09, 31,243,198.86 and 12,718,076.99
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Solution
The fourth proportional to 22,639,442.09, 31,243,198.86 and 12,718,076.99 is: 17,551,378.12
Step by Step Solution
- Step 1: Write the proportion equation
22,639,442.09 : 31,243,198.86 = 12,718,076.99 : x - Step 2: Convert to fraction form
22,639,442.09/31,243,198.86 = 12,718,076.99/x - Step 3: Cross multiply
22,639,442.09x = 31,243,198.86 × 12,718,076.99 - Step 4: Simplify right side
22,639,442.09x = 397,353,408,359,144.19 - Step 5: Solve for x
x = 397,353,408,359,144.19/22,639,442.09 - Step 6: Final answer
x = 17,551,378.12
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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.