Finding the Fourth Proportional to 28,787,697.95, 39,726,965.57 and 16,397,786.68
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Solution
The fourth proportional to 28,787,697.95, 39,726,965.57 and 16,397,786.68 is: 22,628,912.81
Step by Step Solution
- Step 1: Write the proportion equation
28,787,697.95 : 39,726,965.57 = 16,397,786.68 : x - Step 2: Convert to fraction form
28,787,697.95/39,726,965.57 = 16,397,786.68/x - Step 3: Cross multiply
28,787,697.95x = 39,726,965.57 × 16,397,786.68 - Step 4: Simplify right side
28,787,697.95x = 651,434,306,860,564.62 - Step 5: Solve for x
x = 651,434,306,860,564.62/28,787,697.95 - Step 6: Final answer
x = 22,628,912.81
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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.