Finding the Fourth Proportional to 20,859,824.80, 31,289,737.20 and 18,338,327.20
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Solution
The fourth proportional to 20,859,824.80, 31,289,737.20 and 18,338,327.20 is: 27,507,490.80
Step by Step Solution
- Step 1: Write the proportion equation
20,859,824.80 : 31,289,737.20 = 18,338,327.20 : x - Step 2: Convert to fraction form
20,859,824.80/31,289,737.20 = 18,338,327.20/x - Step 3: Cross multiply
20,859,824.80x = 31,289,737.20 × 18,338,327.20 - Step 4: Simplify right side
20,859,824.80x = 573,801,438,775,611.75 - Step 5: Solve for x
x = 573,801,438,775,611.75/20,859,824.80 - Step 6: Final answer
x = 27,507,490.80
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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.