Finding the Fourth Proportional to 18,982,639.28, 28,484,324.73 and 8,051,128.54
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Solution
The fourth proportional to 18,982,639.28, 28,484,324.73 and 8,051,128.54 is: 12,081,089.27
Step by Step Solution
- Step 1: Write the proportion equation
18,982,639.28 : 28,484,324.73 = 8,051,128.54 : x - Step 2: Convert to fraction form
18,982,639.28/28,484,324.73 = 8,051,128.54/x - Step 3: Cross multiply
18,982,639.28x = 28,484,324.73 × 8,051,128.54 - Step 4: Simplify right side
18,982,639.28x = 229,330,959,705,119.97 - Step 5: Solve for x
x = 229,330,959,705,119.97/18,982,639.28 - Step 6: Final answer
x = 12,081,089.27
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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.