Finding the Fourth Proportional to 28,686,790.41, 39,586,615.97 and 15,633,768.39
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Solution
The fourth proportional to 28,686,790.41, 39,586,615.97 and 15,633,768.39 is: 21,573,971.03
Step by Step Solution
- Step 1: Write the proportion equation
28,686,790.41 : 39,586,615.97 = 15,633,768.39 : x - Step 2: Convert to fraction form
28,686,790.41/39,586,615.97 = 15,633,768.39/x - Step 3: Cross multiply
28,686,790.41x = 39,586,615.97 × 15,633,768.39 - Step 4: Simplify right side
28,686,790.41x = 618,887,985,340,686.38 - Step 5: Solve for x
x = 618,887,985,340,686.38/28,686,790.41 - Step 6: Final answer
x = 21,573,971.03
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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.