Finding the Fourth Proportional to 28,784,493.60, 39,722,505.80 and 15,731,748.96
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Solution
The fourth proportional to 28,784,493.60, 39,722,505.80 and 15,731,748.96 is: 21,709,761.44
Step by Step Solution
- Step 1: Write the proportion equation
28,784,493.60 : 39,722,505.80 = 15,731,748.96 : x - Step 2: Convert to fraction form
28,784,493.60/39,722,505.80 = 15,731,748.96/x - Step 3: Cross multiply
28,784,493.60x = 39,722,505.80 × 15,731,748.96 - Step 4: Simplify right side
28,784,493.60x = 624,904,489,307,744 - Step 5: Solve for x
x = 624,904,489,307,744/28,784,493.60 - Step 6: Final answer
x = 21,709,761.44
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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.