Finding the Fourth Proportional to 11,478,179.20, 15,840,603.40 and 6,321,539.44
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Solution
The fourth proportional to 11,478,179.20, 15,840,603.40 and 6,321,539.44 is: 8,724,118.82
Step by Step Solution
- Step 1: Write the proportion equation
11,478,179.20 : 15,840,603.40 = 6,321,539.44 : x - Step 2: Convert to fraction form
11,478,179.20/15,840,603.40 = 6,321,539.44/x - Step 3: Cross multiply
11,478,179.20x = 15,840,603.40 × 6,321,539.44 - Step 4: Simplify right side
11,478,179.20x = 100,136,999,146,498.11 - Step 5: Solve for x
x = 100,136,999,146,498.11/11,478,179.20 - Step 6: Final answer
x = 8,724,118.82
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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.