Finding the Fourth Proportional to 14,387,836.79, 19,854,623.94 and 7,861,690.28
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Solution
The fourth proportional to 14,387,836.79, 19,854,623.94 and 7,861,690.28 is: 10,848,809.75
Step by Step Solution
- Step 1: Write the proportion equation
14,387,836.79 : 19,854,623.94 = 7,861,690.28 : x - Step 2: Convert to fraction form
14,387,836.79/19,854,623.94 = 7,861,690.28/x - Step 3: Cross multiply
14,387,836.79x = 19,854,623.94 × 7,861,690.28 - Step 4: Simplify right side
14,387,836.79x = 156,090,904,042,153.31 - Step 5: Solve for x
x = 156,090,904,042,153.31/14,387,836.79 - Step 6: Final answer
x = 10,848,809.75
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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.