Finding the Fourth Proportional to 12,738,236.16, 19,062,478.08 and 7,948,181.76
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Solution
The fourth proportional to 12,738,236.16, 19,062,478.08 and 7,948,181.76 is: 11,894,271.60
Step by Step Solution
- Step 1: Write the proportion equation
12,738,236.16 : 19,062,478.08 = 7,948,181.76 : x - Step 2: Convert to fraction form
12,738,236.16/19,062,478.08 = 7,948,181.76/x - Step 3: Cross multiply
12,738,236.16x = 19,062,478.08 × 7,948,181.76 - Step 4: Simplify right side
12,738,236.16x = 151,512,040,575,855.81 - Step 5: Solve for x
x = 151,512,040,575,855.81/12,738,236.16 - Step 6: Final answer
x = 11,894,271.60
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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.