Finding the Fourth Proportional to 18,865,307.40, 28,232,642.70 and 11,297,704.20
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Solution
The fourth proportional to 18,865,307.40, 28,232,642.70 and 11,297,704.20 is: 16,907,439.63
Step by Step Solution
- Step 1: Write the proportion equation
18,865,307.40 : 28,232,642.70 = 11,297,704.20 : x - Step 2: Convert to fraction form
18,865,307.40/28,232,642.70 = 11,297,704.20/x - Step 3: Cross multiply
18,865,307.40x = 28,232,642.70 × 11,297,704.20 - Step 4: Simplify right side
18,865,307.40x = 318,964,046,008,889.31 - Step 5: Solve for x
x = 318,964,046,008,889.31/18,865,307.40 - Step 6: Final answer
x = 16,907,439.63
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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.