Finding the Fourth Proportional to 21,256,485.05, 31,889,787.49 and 6,879,552.84
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Solution
The fourth proportional to 21,256,485.05, 31,889,787.49 and 6,879,552.84 is: 10,320,966.87
Step by Step Solution
- Step 1: Write the proportion equation
21,256,485.05 : 31,889,787.49 = 6,879,552.84 : x - Step 2: Convert to fraction form
21,256,485.05/31,889,787.49 = 6,879,552.84/x - Step 3: Cross multiply
21,256,485.05x = 31,889,787.49 × 6,879,552.84 - Step 4: Simplify right side
21,256,485.05x = 219,387,478,023,718.16 - Step 5: Solve for x
x = 219,387,478,023,718.16/21,256,485.05 - Step 6: Final answer
x = 10,320,966.87
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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.