Finding the Fourth Proportional to 19,991,422.86, 29,964,464.96 and 9,186,396.98
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Solution
The fourth proportional to 19,991,422.86, 29,964,464.96 and 9,186,396.98 is: 13,769,178.53
Step by Step Solution
- Step 1: Write the proportion equation
19,991,422.86 : 29,964,464.96 = 9,186,396.98 : x - Step 2: Convert to fraction form
19,991,422.86/29,964,464.96 = 9,186,396.98/x - Step 3: Cross multiply
19,991,422.86x = 29,964,464.96 × 9,186,396.98 - Step 4: Simplify right side
19,991,422.86x = 275,265,470,415,859.84 - Step 5: Solve for x
x = 275,265,470,415,859.84/19,991,422.86 - Step 6: Final answer
x = 13,769,178.53
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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.