Finding the Fourth Proportional to 21,446,142.40, 29,595,537.74 and 12,280,556.62
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Solution
The fourth proportional to 21,446,142.40, 29,595,537.74 and 12,280,556.62 is: 16,947,088.67
Step by Step Solution
- Step 1: Write the proportion equation
21,446,142.40 : 29,595,537.74 = 12,280,556.62 : x - Step 2: Convert to fraction form
21,446,142.40/29,595,537.74 = 12,280,556.62/x - Step 3: Cross multiply
21,446,142.40x = 29,595,537.74 × 12,280,556.62 - Step 4: Simplify right side
21,446,142.40x = 363,449,676,915,416.81 - Step 5: Solve for x
x = 363,449,676,915,416.81/21,446,142.40 - Step 6: Final answer
x = 16,947,088.67
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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.