Finding the Fourth Proportional to 20,139,891.24, 27,796,383.12 and 11,881,972.43
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Solution
The fourth proportional to 20,139,891.24, 27,796,383.12 and 11,881,972.43 is: 16,399,088.45
Step by Step Solution
- Step 1: Write the proportion equation
20,139,891.24 : 27,796,383.12 = 11,881,972.43 : x - Step 2: Convert to fraction form
20,139,891.24/27,796,383.12 = 11,881,972.43/x - Step 3: Cross multiply
20,139,891.24x = 27,796,383.12 × 11,881,972.43 - Step 4: Simplify right side
20,139,891.24x = 330,275,857,746,575.50 - Step 5: Solve for x
x = 330,275,857,746,575.50/20,139,891.24 - Step 6: Final answer
x = 16,399,088.45
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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.