Finding the Fourth Proportional to 12,243,025.40, 18,348,791.70 and 7,445,622.20
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Solution
The fourth proportional to 12,243,025.40, 18,348,791.70 and 7,445,622.20 is: 11,158,857.09
Step by Step Solution
- Step 1: Write the proportion equation
12,243,025.40 : 18,348,791.70 = 7,445,622.20 : x - Step 2: Convert to fraction form
12,243,025.40/18,348,791.70 = 7,445,622.20/x - Step 3: Cross multiply
12,243,025.40x = 18,348,791.70 × 7,445,622.20 - Step 4: Simplify right side
12,243,025.40x = 136,618,170,824,695.73 - Step 5: Solve for x
x = 136,618,170,824,695.73/12,243,025.40 - Step 6: Final answer
x = 11,158,857.09
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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.