Finding the Fourth Proportional to 18,917,469.51, 28,371,849.24 and 7,403,209.75
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Solution
The fourth proportional to 18,917,469.51, 28,371,849.24 and 7,403,209.75 is: 11,103,110.32
Step by Step Solution
- Step 1: Write the proportion equation
18,917,469.51 : 28,371,849.24 = 7,403,209.75 : x - Step 2: Convert to fraction form
18,917,469.51/28,371,849.24 = 7,403,209.75/x - Step 3: Cross multiply
18,917,469.51x = 28,371,849.24 × 7,403,209.75 - Step 4: Simplify right side
18,917,469.51x = 210,042,750,982,324.91 - Step 5: Solve for x
x = 210,042,750,982,324.91/18,917,469.51 - Step 6: Final answer
x = 11,103,110.32
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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.