Finding the Fourth Proportional to 14,980,121.68, 20,693,731.08 and 11,920,421.20
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Solution
The fourth proportional to 14,980,121.68, 20,693,731.08 and 11,920,421.20 is: 16,467,021.83
Step by Step Solution
- Step 1: Write the proportion equation
14,980,121.68 : 20,693,731.08 = 11,920,421.20 : x - Step 2: Convert to fraction form
14,980,121.68/20,693,731.08 = 11,920,421.20/x - Step 3: Cross multiply
14,980,121.68x = 20,693,731.08 × 11,920,421.20 - Step 4: Simplify right side
14,980,121.68x = 246,677,990,673,130.84 - Step 5: Solve for x
x = 246,677,990,673,130.84/14,980,121.68 - Step 6: Final answer
x = 16,467,021.83
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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.