Finding the Fourth Proportional to 21,621,190.32, 29,837,245.59 and 11,831,636.84
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Solution
The fourth proportional to 21,621,190.32, 29,837,245.59 and 11,831,636.84 is: 16,327,660.45
Step by Step Solution
- Step 1: Write the proportion equation
21,621,190.32 : 29,837,245.59 = 11,831,636.84 : x - Step 2: Convert to fraction form
21,621,190.32/29,837,245.59 = 11,831,636.84/x - Step 3: Cross multiply
21,621,190.32x = 29,837,245.59 × 11,831,636.84 - Step 4: Simplify right side
21,621,190.32x = 353,023,453,977,585.31 - Step 5: Solve for x
x = 353,023,453,977,585.31/21,621,190.32 - Step 6: Final answer
x = 16,327,660.45
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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.