Finding the Fourth Proportional to 20,356,356.80, 30,531,327.60 and 16,920,161.84
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Solution
The fourth proportional to 20,356,356.80, 30,531,327.60 and 16,920,161.84 is: 25,377,576.61
Step by Step Solution
- Step 1: Write the proportion equation
20,356,356.80 : 30,531,327.60 = 16,920,161.84 : x - Step 2: Convert to fraction form
20,356,356.80/30,531,327.60 = 16,920,161.84/x - Step 3: Cross multiply
20,356,356.80x = 30,531,327.60 × 16,920,161.84 - Step 4: Simplify right side
20,356,356.80x = 516,595,004,182,058.81 - Step 5: Solve for x
x = 516,595,004,182,058.81/20,356,356.80 - Step 6: Final answer
x = 25,377,576.61
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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.