Finding the Fourth Proportional to 20,288,639.07, 30,361,119.84 and 12,615,897.06
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Solution
The fourth proportional to 20,288,639.07, 30,361,119.84 and 12,615,897.06 is: 18,879,174.75
Step by Step Solution
- Step 1: Write the proportion equation
20,288,639.07 : 30,361,119.84 = 12,615,897.06 : x - Step 2: Convert to fraction form
20,288,639.07/30,361,119.84 = 12,615,897.06/x - Step 3: Cross multiply
20,288,639.07x = 30,361,119.84 × 12,615,897.06 - Step 4: Simplify right side
20,288,639.07x = 383,032,762,527,763.69 - Step 5: Solve for x
x = 383,032,762,527,763.69/20,288,639.07 - Step 6: Final answer
x = 18,879,174.75
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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.