Finding the Fourth Proportional to 13,690,078.02, 18,893,356.89 and 7,809,841.62
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Solution
The fourth proportional to 13,690,078.02, 18,893,356.89 and 7,809,841.62 is: 10,778,179.99
Step by Step Solution
- Step 1: Write the proportion equation
13,690,078.02 : 18,893,356.89 = 7,809,841.62 : x - Step 2: Convert to fraction form
13,690,078.02/18,893,356.89 = 7,809,841.62/x - Step 3: Cross multiply
13,690,078.02x = 18,893,356.89 × 7,809,841.62 - Step 4: Simplify right side
13,690,078.02x = 147,554,124,981,035.78 - Step 5: Solve for x
x = 147,554,124,981,035.78/13,690,078.02 - Step 6: Final answer
x = 10,778,179.99
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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.