Finding the Fourth Proportional to 18,349,243.80, 27,539,612.10 and 8,129,830.20
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Solution
The fourth proportional to 18,349,243.80, 27,539,612.10 and 8,129,830.20 is: 12,201,721.91
Step by Step Solution
- Step 1: Write the proportion equation
18,349,243.80 : 27,539,612.10 = 8,129,830.20 : x - Step 2: Convert to fraction form
18,349,243.80/27,539,612.10 = 8,129,830.20/x - Step 3: Cross multiply
18,349,243.80x = 27,539,612.10 × 8,129,830.20 - Step 4: Simplify right side
18,349,243.80x = 223,892,370,146,865.44 - Step 5: Solve for x
x = 223,892,370,146,865.44/18,349,243.80 - Step 6: Final answer
x = 12,201,721.91
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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.