Finding the Fourth Proportional to 13,331,772.88, 18,397,869.84 and 7,220,201.38
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Solution
The fourth proportional to 13,331,772.88, 18,397,869.84 and 7,220,201.38 is: 9,963,890.50
Step by Step Solution
- Step 1: Write the proportion equation
13,331,772.88 : 18,397,869.84 = 7,220,201.38 : x - Step 2: Convert to fraction form
13,331,772.88/18,397,869.84 = 7,220,201.38/x - Step 3: Cross multiply
13,331,772.88x = 18,397,869.84 × 7,220,201.38 - Step 4: Simplify right side
13,331,772.88x = 132,836,325,207,828.38 - Step 5: Solve for x
x = 132,836,325,207,828.38/13,331,772.88 - Step 6: Final answer
x = 9,963,890.50
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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.