Finding the Fourth Proportional to 12,135,660.40, 18,203,490.60 and 7,340,881.60
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Solution
The fourth proportional to 12,135,660.40, 18,203,490.60 and 7,340,881.60 is: 11,011,322.40
Step by Step Solution
- Step 1: Write the proportion equation
12,135,660.40 : 18,203,490.60 = 7,340,881.60 : x - Step 2: Convert to fraction form
12,135,660.40/18,203,490.60 = 7,340,881.60/x - Step 3: Cross multiply
12,135,660.40x = 18,203,490.60 × 7,340,881.60 - Step 4: Simplify right side
12,135,660.40x = 133,629,669,201,312.97 - Step 5: Solve for x
x = 133,629,669,201,312.97/12,135,660.40 - Step 6: Final answer
x = 11,011,322.40
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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.