Finding the Fourth Proportional to 18,135,968.76, 24,985,066.92 and 12,619,857.48
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Solution
The fourth proportional to 18,135,968.76, 24,985,066.92 and 12,619,857.48 is: 17,385,781.14
Step by Step Solution
- Step 1: Write the proportion equation
18,135,968.76 : 24,985,066.92 = 12,619,857.48 : x - Step 2: Convert to fraction form
18,135,968.76/24,985,066.92 = 12,619,857.48/x - Step 3: Cross multiply
18,135,968.76x = 24,985,066.92 × 12,619,857.48 - Step 4: Simplify right side
18,135,968.76x = 315,307,983,658,662.62 - Step 5: Solve for x
x = 315,307,983,658,662.62/18,135,968.76 - Step 6: Final answer
x = 17,385,781.14
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Why These Related Problems?
These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.