Finding the Fourth Proportional to 21,438,740.48, 29,584,942.20 and 12,018,907.31
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Solution
The fourth proportional to 21,438,740.48, 29,584,942.20 and 12,018,907.31 is: 16,585,800.75
Step by Step Solution
- Step 1: Write the proportion equation
21,438,740.48 : 29,584,942.20 = 12,018,907.31 : x - Step 2: Convert to fraction form
21,438,740.48/29,584,942.20 = 12,018,907.31/x - Step 3: Cross multiply
21,438,740.48x = 29,584,942.20 × 12,018,907.31 - Step 4: Simplify right side
21,438,740.48x = 355,578,677,925,582.75 - Step 5: Solve for x
x = 355,578,677,925,582.75/21,438,740.48 - Step 6: Final answer
x = 16,585,800.75
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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.