Finding the Fourth Proportional to 18,389,910.60, 27,584,865.90 and 15,520,129.20
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Solution
The fourth proportional to 18,389,910.60, 27,584,865.90 and 15,520,129.20 is: 23,280,193.80
Step by Step Solution
- Step 1: Write the proportion equation
18,389,910.60 : 27,584,865.90 = 15,520,129.20 : x - Step 2: Convert to fraction form
18,389,910.60/27,584,865.90 = 15,520,129.20/x - Step 3: Cross multiply
18,389,910.60x = 27,584,865.90 × 15,520,129.20 - Step 4: Simplify right side
18,389,910.60x = 428,120,682,732,674.25 - Step 5: Solve for x
x = 428,120,682,732,674.25/18,389,910.60 - Step 6: Final answer
x = 23,280,193.80
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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.