Finding the Fourth Proportional to 21,256,478.87, 31,889,777.71 and 6,879,546.68
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Solution
The fourth proportional to 21,256,478.87, 31,889,777.71 and 6,879,546.68 is: 10,320,957.46
Step by Step Solution
- Step 1: Write the proportion equation
21,256,478.87 : 31,889,777.71 = 6,879,546.68 : x - Step 2: Convert to fraction form
21,256,478.87/31,889,777.71 = 6,879,546.68/x - Step 3: Cross multiply
21,256,478.87x = 31,889,777.71 × 6,879,546.68 - Step 4: Simplify right side
21,256,478.87x = 219,387,214,194,120.75 - Step 5: Solve for x
x = 219,387,214,194,120.75/21,256,478.87 - Step 6: Final answer
x = 10,320,957.46
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These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.