Finding the Fourth Proportional to 12,474,135.20, 18,711,202.80 and 11,781,293.60
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Solution
The fourth proportional to 12,474,135.20, 18,711,202.80 and 11,781,293.60 is: 17,671,940.40
Step by Step Solution
- Step 1: Write the proportion equation
12,474,135.20 : 18,711,202.80 = 11,781,293.60 : x - Step 2: Convert to fraction form
12,474,135.20/18,711,202.80 = 11,781,293.60/x - Step 3: Cross multiply
12,474,135.20x = 18,711,202.80 × 11,781,293.60 - Step 4: Simplify right side
12,474,135.20x = 220,442,173,795,942.09 - Step 5: Solve for x
x = 220,442,173,795,942.09/12,474,135.20 - Step 6: Final answer
x = 17,671,940.40
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1.5x scale
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.