Finding the Fourth Proportional to 13,667,091.68, 18,860,980.19 and 7,555,913.84
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Solution
The fourth proportional to 13,667,091.68, 18,860,980.19 and 7,555,913.84 is: 10,427,378.74
Step by Step Solution
- Step 1: Write the proportion equation
13,667,091.68 : 18,860,980.19 = 7,555,913.84 : x - Step 2: Convert to fraction form
13,667,091.68/18,860,980.19 = 7,555,913.84/x - Step 3: Cross multiply
13,667,091.68x = 18,860,980.19 × 7,555,913.84 - Step 4: Simplify right side
13,667,091.68x = 142,511,941,253,586.84 - Step 5: Solve for x
x = 142,511,941,253,586.84/13,667,091.68 - Step 6: Final answer
x = 10,427,378.74
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1.5x scale
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.