Finding the Fourth Proportional to 13,413,891.05, 20,120,836.58 and 4,891,395.05
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Solution
The fourth proportional to 13,413,891.05, 20,120,836.58 and 4,891,395.05 is: 7,337,092.58
Step by Step Solution
- Step 1: Write the proportion equation
13,413,891.05 : 20,120,836.58 = 4,891,395.05 : x - Step 2: Convert to fraction form
13,413,891.05/20,120,836.58 = 4,891,395.05/x - Step 3: Cross multiply
13,413,891.05x = 20,120,836.58 × 4,891,395.05 - Step 4: Simplify right side
13,413,891.05x = 98,418,960,424,813.95 - Step 5: Solve for x
x = 98,418,960,424,813.95/13,413,891.05 - Step 6: Final answer
x = 7,337,092.58
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Why These Related Problems?
These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.