Finding the Fourth Proportional to 21,197,824.70, 31,796,737.05 and 19,780,648.70
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Solution
The fourth proportional to 21,197,824.70, 31,796,737.05 and 19,780,648.70 is: 29,670,973.05
Step by Step Solution
- Step 1: Write the proportion equation
21,197,824.70 : 31,796,737.05 = 19,780,648.70 : x - Step 2: Convert to fraction form
21,197,824.70/31,796,737.05 = 19,780,648.70/x - Step 3: Cross multiply
21,197,824.70x = 31,796,737.05 × 19,780,648.70 - Step 4: Simplify right side
21,197,824.70x = 628,960,085,392,324.38 - Step 5: Solve for x
x = 628,960,085,392,324.38/21,197,824.70 - Step 6: Final answer
x = 29,670,973.05
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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.