Finding the Fourth Proportional to 20,870,289.99, 31,307,580.09 and 7,223,414.13
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Solution
The fourth proportional to 20,870,289.99, 31,307,580.09 and 7,223,414.13 is: 10,835,863.64
Step by Step Solution
- Step 1: Write the proportion equation
20,870,289.99 : 31,307,580.09 = 7,223,414.13 : x - Step 2: Convert to fraction form
20,870,289.99/31,307,580.09 = 7,223,414.13/x - Step 3: Cross multiply
20,870,289.99x = 31,307,580.09 × 7,223,414.13 - Step 4: Simplify right side
20,870,289.99x = 226,147,616,398,212.66 - Step 5: Solve for x
x = 226,147,616,398,212.66/20,870,289.99 - Step 6: Final answer
x = 10,835,863.64
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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.