Finding the Fourth Proportional to 13,198,766.70, 18,216,851.49 and 8,607,116.46
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Solution
The fourth proportional to 13,198,766.70, 18,216,851.49 and 8,607,116.46 is: 11,879,485.85
Step by Step Solution
- Step 1: Write the proportion equation
13,198,766.70 : 18,216,851.49 = 8,607,116.46 : x - Step 2: Convert to fraction form
13,198,766.70/18,216,851.49 = 8,607,116.46/x - Step 3: Cross multiply
13,198,766.70x = 18,216,851.49 × 8,607,116.46 - Step 4: Simplify right side
13,198,766.70x = 156,794,562,308,954.53 - Step 5: Solve for x
x = 156,794,562,308,954.53/13,198,766.70 - Step 6: Final answer
x = 11,879,485.85
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These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.