Finding the Fourth Proportional to 19,678,411.20, 29,517,616.80 and 16,319,179.20
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Solution
The fourth proportional to 19,678,411.20, 29,517,616.80 and 16,319,179.20 is: 24,478,768.80
Step by Step Solution
- Step 1: Write the proportion equation
19,678,411.20 : 29,517,616.80 = 16,319,179.20 : x - Step 2: Convert to fraction form
19,678,411.20/29,517,616.80 = 16,319,179.20/x - Step 3: Cross multiply
19,678,411.20x = 29,517,616.80 × 16,319,179.20 - Step 4: Simplify right side
19,678,411.20x = 481,703,278,116,130.56 - Step 5: Solve for x
x = 481,703,278,116,130.56/19,678,411.20 - Step 6: Final answer
x = 24,478,768.80
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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.