Finding the Fourth Proportional to 20,841,942.29, 31,265,927.37 and 7,884,579.65
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Solution
The fourth proportional to 20,841,942.29, 31,265,927.37 and 7,884,579.65 is: 11,828,009.65
Step by Step Solution
- Step 1: Write the proportion equation
20,841,942.29 : 31,265,927.37 = 7,884,579.65 : x - Step 2: Convert to fraction form
20,841,942.29/31,265,927.37 = 7,884,579.65/x - Step 3: Cross multiply
20,841,942.29x = 31,265,927.37 × 7,884,579.65 - Step 4: Simplify right side
20,841,942.29x = 246,518,694,523,550.38 - Step 5: Solve for x
x = 246,518,694,523,550.38/20,841,942.29 - Step 6: Final answer
x = 11,828,009.65
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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.