Finding the Fourth Proportional to 20,903,460.57, 31,355,505.99 and 7,257,040.29
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Solution
The fourth proportional to 20,903,460.57, 31,355,505.99 and 7,257,040.29 is: 10,885,669.84
Step by Step Solution
- Step 1: Write the proportion equation
20,903,460.57 : 31,355,505.99 = 7,257,040.29 : x - Step 2: Convert to fraction form
20,903,460.57/31,355,505.99 = 7,257,040.29/x - Step 3: Cross multiply
20,903,460.57x = 31,355,505.99 × 7,257,040.29 - Step 4: Simplify right side
20,903,460.57x = 227,548,170,282,766.31 - Step 5: Solve for x
x = 227,548,170,282,766.31/20,903,460.57 - Step 6: Final answer
x = 10,885,669.84
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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.