Finding the Fourth Proportional to 21,315,458.70, 29,413,555.80 and 12,022,516.62
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Solution
The fourth proportional to 21,315,458.70, 29,413,555.80 and 12,022,516.62 is: 16,590,070.54
Step by Step Solution
- Step 1: Write the proportion equation
21,315,458.70 : 29,413,555.80 = 12,022,516.62 : x - Step 2: Convert to fraction form
21,315,458.70/29,413,555.80 = 12,022,516.62/x - Step 3: Cross multiply
21,315,458.70x = 29,413,555.80 × 12,022,516.62 - Step 4: Simplify right side
21,315,458.70x = 353,624,963,458,797.38 - Step 5: Solve for x
x = 353,624,963,458,797.38/21,315,458.70 - Step 6: Final answer
x = 16,590,070.54
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1.5x scale
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.