Finding the Fourth Proportional to 28,861,158.60, 39,828,390.12 and 15,809,230.08
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Solution
The fourth proportional to 28,861,158.60, 39,828,390.12 and 15,809,230.08 is: 21,816,732.72
Step by Step Solution
- Step 1: Write the proportion equation
28,861,158.60 : 39,828,390.12 = 15,809,230.08 : x - Step 2: Convert to fraction form
28,861,158.60/39,828,390.12 = 15,809,230.08/x - Step 3: Cross multiply
28,861,158.60x = 39,828,390.12 × 15,809,230.08 - Step 4: Simplify right side
28,861,158.60x = 629,656,183,123,078.75 - Step 5: Solve for x
x = 629,656,183,123,078.75/28,861,158.60 - Step 6: Final answer
x = 21,816,732.72
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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.