Finding the Fourth Proportional to 19,981,431.48, 29,984,104.47 and 8,621,880.11
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Solution
The fourth proportional to 19,981,431.48, 29,984,104.47 and 8,621,880.11 is: 12,937,979.65
Step by Step Solution
- Step 1: Write the proportion equation
19,981,431.48 : 29,984,104.47 = 8,621,880.11 : x - Step 2: Convert to fraction form
19,981,431.48/29,984,104.47 = 8,621,880.11/x - Step 3: Cross multiply
19,981,431.48x = 29,984,104.47 × 8,621,880.11 - Step 4: Simplify right side
19,981,431.48x = 258,519,353,796,134.56 - Step 5: Solve for x
x = 258,519,353,796,134.56/19,981,431.48 - Step 6: Final answer
x = 12,937,979.65
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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.