Finding the Fourth Proportional to 12,128,425.70, 18,192,638.55 and 5,751,133.70
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Solution
The fourth proportional to 12,128,425.70, 18,192,638.55 and 5,751,133.70 is: 8,626,700.55
Step by Step Solution
- Step 1: Write the proportion equation
12,128,425.70 : 18,192,638.55 = 5,751,133.70 : x - Step 2: Convert to fraction form
12,128,425.70/18,192,638.55 = 5,751,133.70/x - Step 3: Cross multiply
12,128,425.70x = 18,192,638.55 × 5,751,133.70 - Step 4: Simplify right side
12,128,425.70x = 104,628,296,656,824.14 - Step 5: Solve for x
x = 104,628,296,656,824.14/12,128,425.70 - Step 6: Final answer
x = 8,626,700.55
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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.