Finding the Fourth Proportional to 10,992,881.20, 16,489,321.80 and 8,158,529.20
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Solution
The fourth proportional to 10,992,881.20, 16,489,321.80 and 8,158,529.20 is: 12,237,793.80
Step by Step Solution
- Step 1: Write the proportion equation
10,992,881.20 : 16,489,321.80 = 8,158,529.20 : x - Step 2: Convert to fraction form
10,992,881.20/16,489,321.80 = 8,158,529.20/x - Step 3: Cross multiply
10,992,881.20x = 16,489,321.80 × 8,158,529.20 - Step 4: Simplify right side
10,992,881.20x = 134,528,613,393,496.56 - Step 5: Solve for x
x = 134,528,613,393,496.56/10,992,881.20 - Step 6: Final answer
x = 12,237,793.80
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Why These Related Problems?
These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.