Finding the Fourth Proportional to 21,382,560.12, 29,508,555.32 and 12,089,930.58
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Solution
The fourth proportional to 21,382,560.12, 29,508,555.32 and 12,089,930.58 is: 16,684,456.09
Step by Step Solution
- Step 1: Write the proportion equation
21,382,560.12 : 29,508,555.32 = 12,089,930.58 : x - Step 2: Convert to fraction form
21,382,560.12/29,508,555.32 = 12,089,930.58/x - Step 3: Cross multiply
21,382,560.12x = 29,508,555.32 × 12,089,930.58 - Step 4: Simplify right side
21,382,560.12x = 356,756,385,365,114.56 - Step 5: Solve for x
x = 356,756,385,365,114.56/21,382,560.12 - Step 6: Final answer
x = 16,684,456.09
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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.