Finding the Fourth Proportional to 19,420,529.09, 26,800,274.79 and 10,718,639.21
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Solution
The fourth proportional to 19,420,529.09, 26,800,274.79 and 10,718,639.21 is: 14,791,691.57
Step by Step Solution
- Step 1: Write the proportion equation
19,420,529.09 : 26,800,274.79 = 10,718,639.21 : x - Step 2: Convert to fraction form
19,420,529.09/26,800,274.79 = 10,718,639.21/x - Step 3: Cross multiply
19,420,529.09x = 26,800,274.79 × 10,718,639.21 - Step 4: Simplify right side
19,420,529.09x = 287,262,476,269,869.19 - Step 5: Solve for x
x = 287,262,476,269,869.19/19,420,529.09 - Step 6: Final answer
x = 14,791,691.57
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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.