Finding the Fourth Proportional to 19,766,893.76, 27,259,149.68 and 15,414,391.97
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Solution
The fourth proportional to 19,766,893.76, 27,259,149.68 and 15,414,391.97 is: 21,256,916.89
Step by Step Solution
- Step 1: Write the proportion equation
19,766,893.76 : 27,259,149.68 = 15,414,391.97 : x - Step 2: Convert to fraction form
19,766,893.76/27,259,149.68 = 15,414,391.97/x - Step 3: Cross multiply
19,766,893.76x = 27,259,149.68 × 15,414,391.97 - Step 4: Simplify right side
19,766,893.76x = 420,183,217,800,124.31 - Step 5: Solve for x
x = 420,183,217,800,124.31/19,766,893.76 - Step 6: Final answer
x = 21,256,916.89
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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.