Finding the Fourth Proportional to 11,667,129.57, 16,100,639.12 and 6,440,138.82
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Solution
The fourth proportional to 11,667,129.57, 16,100,639.12 and 6,440,138.82 is: 8,887,391.75
Step by Step Solution
- Step 1: Write the proportion equation
11,667,129.57 : 16,100,639.12 = 6,440,138.82 : x - Step 2: Convert to fraction form
11,667,129.57/16,100,639.12 = 6,440,138.82/x - Step 3: Cross multiply
11,667,129.57x = 16,100,639.12 × 6,440,138.82 - Step 4: Simplify right side
11,667,129.57x = 103,690,351,039,623 - Step 5: Solve for x
x = 103,690,351,039,623/11,667,129.57 - Step 6: Final answer
x = 8,887,391.75
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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.