Finding the Fourth Proportional to 21,580,516.05, 29,780,759.87 and 11,790,749.53
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Solution
The fourth proportional to 21,580,516.05, 29,780,759.87 and 11,790,749.53 is: 16,271,041.88
Step by Step Solution
- Step 1: Write the proportion equation
21,580,516.05 : 29,780,759.87 = 11,790,749.53 : x - Step 2: Convert to fraction form
21,580,516.05/29,780,759.87 = 11,790,749.53/x - Step 3: Cross multiply
21,580,516.05x = 29,780,759.87 × 11,790,749.53 - Step 4: Simplify right side
21,580,516.05x = 351,137,480,381,291.56 - Step 5: Solve for x
x = 351,137,480,381,291.56/21,580,516.05 - Step 6: Final answer
x = 16,271,041.88
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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.