Finding the Fourth Proportional to 20,913,728.28, 28,863,651.36 and 11,746,370.76
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Solution
The fourth proportional to 20,913,728.28, 28,863,651.36 and 11,746,370.76 is: 16,211,511.68
Step by Step Solution
- Step 1: Write the proportion equation
20,913,728.28 : 28,863,651.36 = 11,746,370.76 : x - Step 2: Convert to fraction form
20,913,728.28/28,863,651.36 = 11,746,370.76/x - Step 3: Cross multiply
20,913,728.28x = 28,863,651.36 × 11,746,370.76 - Step 4: Simplify right side
20,913,728.28x = 339,043,150,361,938.25 - Step 5: Solve for x
x = 339,043,150,361,938.25/20,913,728.28 - Step 6: Final answer
x = 16,211,511.68
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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.