Finding the Fourth Proportional to 16,128,491.20, 24,192,736.80 and 13,291,806.40
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Solution
The fourth proportional to 16,128,491.20, 24,192,736.80 and 13,291,806.40 is: 19,937,709.60
Step by Step Solution
- Step 1: Write the proportion equation
16,128,491.20 : 24,192,736.80 = 13,291,806.40 : x - Step 2: Convert to fraction form
16,128,491.20/24,192,736.80 = 13,291,806.40/x - Step 3: Cross multiply
16,128,491.20x = 24,192,736.80 × 13,291,806.40 - Step 4: Simplify right side
16,128,491.20x = 321,565,173,831,755.56 - Step 5: Solve for x
x = 321,565,173,831,755.56/16,128,491.20 - Step 6: Final answer
x = 19,937,709.60
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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.