Finding the Fourth Proportional to 11,286,078.21, 15,575,748.50 and 6,392,170.91
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Solution
The fourth proportional to 11,286,078.21, 15,575,748.50 and 6,392,170.91 is: 8,821,739.90
Step by Step Solution
- Step 1: Write the proportion equation
11,286,078.21 : 15,575,748.50 = 6,392,170.91 : x - Step 2: Convert to fraction form
11,286,078.21/15,575,748.50 = 6,392,170.91/x - Step 3: Cross multiply
11,286,078.21x = 15,575,748.50 × 6,392,170.91 - Step 4: Simplify right side
11,286,078.21x = 99,562,846,463,176.14 - Step 5: Solve for x
x = 99,562,846,463,176.14/11,286,078.21 - Step 6: Final answer
x = 8,821,739.90
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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.