Finding the Fourth Proportional to 15,289,531.84, 21,099,556.94 and 8,414,013.94
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Solution
The fourth proportional to 15,289,531.84, 21,099,556.94 and 8,414,013.94 is: 11,611,340.89
Step by Step Solution
- Step 1: Write the proportion equation
15,289,531.84 : 21,099,556.94 = 8,414,013.94 : x - Step 2: Convert to fraction form
15,289,531.84/21,099,556.94 = 8,414,013.94/x - Step 3: Cross multiply
15,289,531.84x = 21,099,556.94 × 8,414,013.94 - Step 4: Simplify right side
15,289,531.84x = 177,531,966,220,983.75 - Step 5: Solve for x
x = 177,531,966,220,983.75/15,289,531.84 - Step 6: Final answer
x = 11,611,340.89
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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.