Finding the Fourth Proportional to 18,361,686.80, 27,542,530.20 and 8,283,990.80
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Solution
The fourth proportional to 18,361,686.80, 27,542,530.20 and 8,283,990.80 is: 12,425,986.20
Step by Step Solution
- Step 1: Write the proportion equation
18,361,686.80 : 27,542,530.20 = 8,283,990.80 : x - Step 2: Convert to fraction form
18,361,686.80/27,542,530.20 = 8,283,990.80/x - Step 3: Cross multiply
18,361,686.80x = 27,542,530.20 × 8,283,990.80 - Step 4: Simplify right side
18,361,686.80x = 228,162,066,785,522.16 - Step 5: Solve for x
x = 228,162,066,785,522.16/18,361,686.80 - Step 6: Final answer
x = 12,425,986.20
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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.