Finding the Fourth Proportional to 13,129,107.85, 18,116,497.77 and 7,328,134.09
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Solution
The fourth proportional to 13,129,107.85, 18,116,497.77 and 7,328,134.09 is: 10,111,892.32
Step by Step Solution
- Step 1: Write the proportion equation
13,129,107.85 : 18,116,497.77 = 7,328,134.09 : x - Step 2: Convert to fraction form
13,129,107.85/18,116,497.77 = 7,328,134.09/x - Step 3: Cross multiply
13,129,107.85x = 18,116,497.77 × 7,328,134.09 - Step 4: Simplify right side
13,129,107.85x = 132,760,124,894,911.09 - Step 5: Solve for x
x = 132,760,124,894,911.09/13,129,107.85 - Step 6: Final answer
x = 10,111,892.32
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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.