Finding the Fourth Proportional to 12,221,309.37, 18,331,847.41 and 7,430,321.37
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Solution
The fourth proportional to 12,221,309.37, 18,331,847.41 and 7,430,321.37 is: 11,145,411.13
Step by Step Solution
- Step 1: Write the proportion equation
12,221,309.37 : 18,331,847.41 = 7,430,321.37 : x - Step 2: Convert to fraction form
12,221,309.37/18,331,847.41 = 7,430,321.37/x - Step 3: Cross multiply
12,221,309.37x = 18,331,847.41 × 7,430,321.37 - Step 4: Simplify right side
12,221,309.37x = 136,211,517,474,781.91 - Step 5: Solve for x
x = 136,211,517,474,781.91/12,221,309.37 - Step 6: Final answer
x = 11,145,411.13
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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.