Finding the Fourth Proportional to 12,226,686.49, 18,338,905.14 and 4,138,737.67
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Solution
The fourth proportional to 12,226,686.49, 18,338,905.14 and 4,138,737.67 is: 6,207,725.83
Step by Step Solution
- Step 1: Write the proportion equation
12,226,686.49 : 18,338,905.14 = 4,138,737.67 : x - Step 2: Convert to fraction form
12,226,686.49/18,338,905.14 = 4,138,737.67/x - Step 3: Cross multiply
12,226,686.49x = 18,338,905.14 × 4,138,737.67 - Step 4: Simplify right side
12,226,686.49x = 75,899,917,529,474.62 - Step 5: Solve for x
x = 75,899,917,529,474.62/12,226,686.49 - Step 6: Final answer
x = 6,207,725.83
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Why These Related Problems?
These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.