Finding the Fourth Proportional to 10,979,893.70, 16,469,840.55 and 8,145,541.70
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Solution
The fourth proportional to 10,979,893.70, 16,469,840.55 and 8,145,541.70 is: 12,218,312.55
Step by Step Solution
- Step 1: Write the proportion equation
10,979,893.70 : 16,469,840.55 = 8,145,541.70 : x - Step 2: Convert to fraction form
10,979,893.70/16,469,840.55 = 8,145,541.70/x - Step 3: Cross multiply
10,979,893.70x = 16,469,840.55 × 8,145,541.70 - Step 4: Simplify right side
10,979,893.70x = 134,155,772,992,375.94 - Step 5: Solve for x
x = 134,155,772,992,375.94/10,979,893.70 - Step 6: Final answer
x = 12,218,312.55
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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.