Finding the Fourth Proportional to 19,640,949.70, 27,105,355.30 and 10,939,126.18
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Solution
The fourth proportional to 19,640,949.70, 27,105,355.30 and 10,939,126.18 is: 15,096,464.60
Step by Step Solution
- Step 1: Write the proportion equation
19,640,949.70 : 27,105,355.30 = 10,939,126.18 : x - Step 2: Convert to fraction form
19,640,949.70/27,105,355.30 = 10,939,126.18/x - Step 3: Cross multiply
19,640,949.70x = 27,105,355.30 × 10,939,126.18 - Step 4: Simplify right side
19,640,949.70x = 296,508,901,780,431.75 - Step 5: Solve for x
x = 296,508,901,780,431.75/19,640,949.70 - Step 6: Final answer
x = 15,096,464.60
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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.