Finding the Fourth Proportional to 18,438,817.54, 27,651,733.58 and 6,139,440.78
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Solution
The fourth proportional to 18,438,817.54, 27,651,733.58 and 6,139,440.78 is: 9,206,999.33
Step by Step Solution
- Step 1: Write the proportion equation
18,438,817.54 : 27,651,733.58 = 6,139,440.78 : x - Step 2: Convert to fraction form
18,438,817.54/27,651,733.58 = 6,139,440.78/x - Step 3: Cross multiply
18,438,817.54x = 27,651,733.58 × 6,139,440.78 - Step 4: Simplify right side
18,438,817.54x = 169,766,180,811,408.66 - Step 5: Solve for x
x = 169,766,180,811,408.66/18,438,817.54 - Step 6: Final answer
x = 9,206,999.33
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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.