Finding the Fourth Proportional to 21,151,859.08, 29,186,952.60 and 12,888,909.76
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Solution
The fourth proportional to 21,151,859.08, 29,186,952.60 and 12,888,909.76 is: 17,785,103.28
Step by Step Solution
- Step 1: Write the proportion equation
21,151,859.08 : 29,186,952.60 = 12,888,909.76 : x - Step 2: Convert to fraction form
21,151,859.08/29,186,952.60 = 12,888,909.76/x - Step 3: Cross multiply
21,151,859.08x = 29,186,952.60 × 12,888,909.76 - Step 4: Simplify right side
21,151,859.08x = 376,187,998,230,797.38 - Step 5: Solve for x
x = 376,187,998,230,797.38/21,151,859.08 - Step 6: Final answer
x = 17,785,103.28
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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.