Finding the Fourth Proportional to 11,314,990.96, 15,614,225.92 and 6,420,107.68
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Solution
The fourth proportional to 11,314,990.96, 15,614,225.92 and 6,420,107.68 is: 8,859,486.68
Step by Step Solution
- Step 1: Write the proportion equation
11,314,990.96 : 15,614,225.92 = 6,420,107.68 : x - Step 2: Convert to fraction form
11,314,990.96/15,614,225.92 = 6,420,107.68/x - Step 3: Cross multiply
11,314,990.96x = 15,614,225.92 × 6,420,107.68 - Step 4: Simplify right side
11,314,990.96x = 100,245,011,746,247.06 - Step 5: Solve for x
x = 100,245,011,746,247.06/11,314,990.96 - Step 6: Final answer
x = 8,859,486.68
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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.