Finding the Fourth Proportional to 18,178,846.35, 25,095,898.80 and 11,305,542.75
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Solution
The fourth proportional to 18,178,846.35, 25,095,898.80 and 11,305,542.75 is: 15,607,302.65
Step by Step Solution
- Step 1: Write the proportion equation
18,178,846.35 : 25,095,898.80 = 11,305,542.75 : x - Step 2: Convert to fraction form
18,178,846.35/25,095,898.80 = 11,305,542.75/x - Step 3: Cross multiply
18,178,846.35x = 25,095,898.80 × 11,305,542.75 - Step 4: Simplify right side
18,178,846.35x = 283,722,756,733,073.69 - Step 5: Solve for x
x = 283,722,756,733,073.69/18,178,846.35 - Step 6: Final answer
x = 15,607,302.65
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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.