Finding the Fourth Proportional to 20,965,020.48, 31,455,097.61 and 7,320,177.09
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Solution
The fourth proportional to 20,965,020.48, 31,455,097.61 and 7,320,177.09 is: 10,982,907.70
Step by Step Solution
- Step 1: Write the proportion equation
20,965,020.48 : 31,455,097.61 = 7,320,177.09 : x - Step 2: Convert to fraction form
20,965,020.48/31,455,097.61 = 7,320,177.09/x - Step 3: Cross multiply
20,965,020.48x = 31,455,097.61 × 7,320,177.09 - Step 4: Simplify right side
20,965,020.48x = 230,256,884,851,834.88 - Step 5: Solve for x
x = 230,256,884,851,834.88/20,965,020.48 - Step 6: Final answer
x = 10,982,907.70
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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.