Finding the Fourth Proportional to 18,821,635.20, 28,232,452.80 and 14,564,858.40
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Solution
The fourth proportional to 18,821,635.20, 28,232,452.80 and 14,564,858.40 is: 21,847,287.60
Step by Step Solution
- Step 1: Write the proportion equation
18,821,635.20 : 28,232,452.80 = 14,564,858.40 : x - Step 2: Convert to fraction form
18,821,635.20/28,232,452.80 = 14,564,858.40/x - Step 3: Cross multiply
18,821,635.20x = 28,232,452.80 × 14,564,858.40 - Step 4: Simplify right side
18,821,635.20x = 411,201,677,316,683.56 - Step 5: Solve for x
x = 411,201,677,316,683.56/18,821,635.20 - Step 6: Final answer
x = 21,847,287.60
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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.