Finding the Fourth Proportional to 13,321,511.20, 18,383,685.06 and 7,209,939.88
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Solution
The fourth proportional to 13,321,511.20, 18,383,685.06 and 7,209,939.88 is: 9,949,716.82
Step by Step Solution
- Step 1: Write the proportion equation
13,321,511.20 : 18,383,685.06 = 7,209,939.88 : x - Step 2: Convert to fraction form
13,321,511.20/18,383,685.06 = 7,209,939.88/x - Step 3: Cross multiply
13,321,511.20x = 18,383,685.06 × 7,209,939.88 - Step 4: Simplify right side
13,321,511.20x = 132,545,264,055,454.19 - Step 5: Solve for x
x = 132,545,264,055,454.19/13,321,511.20 - Step 6: Final answer
x = 9,949,716.82
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These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.