Finding the Fourth Proportional to 20,940,615.48, 28,888,349.58 and 12,239,154.84
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Solution
The fourth proportional to 20,940,615.48, 28,888,349.58 and 12,239,154.84 is: 16,884,364.45
Step by Step Solution
- Step 1: Write the proportion equation
20,940,615.48 : 28,888,349.58 = 12,239,154.84 : x - Step 2: Convert to fraction form
20,940,615.48/28,888,349.58 = 12,239,154.84/x - Step 3: Cross multiply
20,940,615.48x = 28,888,349.58 × 12,239,154.84 - Step 4: Simplify right side
20,940,615.48x = 353,568,983,581,668.94 - Step 5: Solve for x
x = 353,568,983,581,668.94/20,940,615.48 - Step 6: Final answer
x = 16,884,364.45
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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.