Finding the Fourth Proportional to 21,598,235.84, 29,805,619.12 and 11,809,311.76
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Solution
The fourth proportional to 21,598,235.84, 29,805,619.12 and 11,809,311.76 is: 16,296,879.57
Step by Step Solution
- Step 1: Write the proportion equation
21,598,235.84 : 29,805,619.12 = 11,809,311.76 : x - Step 2: Convert to fraction form
21,598,235.84/29,805,619.12 = 11,809,311.76/x - Step 3: Cross multiply
21,598,235.84x = 29,805,619.12 × 11,809,311.76 - Step 4: Simplify right side
21,598,235.84x = 351,983,848,387,896.88 - Step 5: Solve for x
x = 351,983,848,387,896.88/21,598,235.84 - Step 6: Final answer
x = 16,296,879.57
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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.