Finding the Fourth Proportional to 18,591,730.80, 27,887,596.20 and 12,545,113.20
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Solution
The fourth proportional to 18,591,730.80, 27,887,596.20 and 12,545,113.20 is: 18,817,669.80
Step by Step Solution
- Step 1: Write the proportion equation
18,591,730.80 : 27,887,596.20 = 12,545,113.20 : x - Step 2: Convert to fraction form
18,591,730.80/27,887,596.20 = 12,545,113.20/x - Step 3: Cross multiply
18,591,730.80x = 27,887,596.20 × 12,545,113.20 - Step 4: Simplify right side
18,591,730.80x = 349,853,051,204,889.81 - Step 5: Solve for x
x = 349,853,051,204,889.81/18,591,730.80 - Step 6: Final answer
x = 18,817,669.80
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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.