Finding the Fourth Proportional to 11,150,988.81, 15,389,292.09 and 6,189,897.12
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Solution
The fourth proportional to 11,150,988.81, 15,389,292.09 and 6,189,897.12 is: 8,542,572.90
Step by Step Solution
- Step 1: Write the proportion equation
11,150,988.81 : 15,389,292.09 = 6,189,897.12 : x - Step 2: Convert to fraction form
11,150,988.81/15,389,292.09 = 6,189,897.12/x - Step 3: Cross multiply
11,150,988.81x = 15,389,292.09 × 6,189,897.12 - Step 4: Simplify right side
11,150,988.81x = 95,258,134,786,729.78 - Step 5: Solve for x
x = 95,258,134,786,729.78/11,150,988.81 - Step 6: Final answer
x = 8,542,572.90
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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.