Finding the Fourth Proportional to 13,330,665.21, 18,386,112.09 and 9,207,596.53
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Solution
The fourth proportional to 13,330,665.21, 18,386,112.09 and 9,207,596.53 is: 12,699,433.91
Step by Step Solution
- Step 1: Write the proportion equation
13,330,665.21 : 18,386,112.09 = 9,207,596.53 : x - Step 2: Convert to fraction form
13,330,665.21/18,386,112.09 = 9,207,596.53/x - Step 3: Cross multiply
13,330,665.21x = 18,386,112.09 × 9,207,596.53 - Step 4: Simplify right side
13,330,665.21x = 169,291,901,885,793.47 - Step 5: Solve for x
x = 169,291,901,885,793.47/13,330,665.21 - Step 6: Final answer
x = 12,699,433.91
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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.