Finding the Fourth Proportional to 13,991,138.07, 20,970,787.40 and 8,514,153.17
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Solution
The fourth proportional to 13,991,138.07, 20,970,787.40 and 8,514,153.17 is: 12,761,541.99
Step by Step Solution
- Step 1: Write the proportion equation
13,991,138.07 : 20,970,787.40 = 8,514,153.17 : x - Step 2: Convert to fraction form
13,991,138.07/20,970,787.40 = 8,514,153.17/x - Step 3: Cross multiply
13,991,138.07x = 20,970,787.40 × 8,514,153.17 - Step 4: Simplify right side
13,991,138.07x = 178,548,496,019,106.03 - Step 5: Solve for x
x = 178,548,496,019,106.03/13,991,138.07 - Step 6: Final answer
x = 12,761,541.99
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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.