Finding the Fourth Proportional to 13,215,819.88, 18,203,850.64 and 9,341,680.60
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Solution
The fourth proportional to 13,215,819.88, 18,203,850.64 and 9,341,680.60 is: 12,867,499.70
Step by Step Solution
- Step 1: Write the proportion equation
13,215,819.88 : 18,203,850.64 = 9,341,680.60 : x - Step 2: Convert to fraction form
13,215,819.88/18,203,850.64 = 9,341,680.60/x - Step 3: Cross multiply
13,215,819.88x = 18,203,850.64 × 9,341,680.60 - Step 4: Simplify right side
13,215,819.88x = 170,054,558,368,985.59 - Step 5: Solve for x
x = 170,054,558,368,985.59/13,215,819.88 - Step 6: Final answer
x = 12,867,499.70
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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.