Finding the Fourth Proportional to 10,922,519.20, 15,078,742.92 and 7,979,031.11
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Solution
The fourth proportional to 10,922,519.20, 15,078,742.92 and 7,979,031.11 is: 11,015,202.32
Step by Step Solution
- Step 1: Write the proportion equation
10,922,519.20 : 15,078,742.92 = 7,979,031.11 : x - Step 2: Convert to fraction form
10,922,519.20/15,078,742.92 = 7,979,031.11/x - Step 3: Cross multiply
10,922,519.20x = 15,078,742.92 × 7,979,031.11 - Step 4: Simplify right side
10,922,519.20x = 120,313,758,858,372.25 - Step 5: Solve for x
x = 120,313,758,858,372.25/10,922,519.20 - Step 6: Final answer
x = 11,015,202.32
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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.