Finding the Fourth Proportional to 10,988,775.20, 15,147,032.73 and 8,661,894.68
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Solution
The fourth proportional to 10,988,775.20, 15,147,032.73 and 8,661,894.68 is: 11,939,638.39
Step by Step Solution
- Step 1: Write the proportion equation
10,988,775.20 : 15,147,032.73 = 8,661,894.68 : x - Step 2: Convert to fraction form
10,988,775.20/15,147,032.73 = 8,661,894.68/x - Step 3: Cross multiply
10,988,775.20x = 15,147,032.73 × 8,661,894.68 - Step 4: Simplify right side
10,988,775.20x = 131,202,002,221,772.88 - Step 5: Solve for x
x = 131,202,002,221,772.88/10,988,775.20 - Step 6: Final answer
x = 11,939,638.39
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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.