Finding the Fourth Proportional to 13,136,578.68, 18,128,517.92 and 7,335,572.12
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Solution
The fourth proportional to 13,136,578.68, 18,128,517.92 and 7,335,572.12 is: 10,123,111.49
Step by Step Solution
- Step 1: Write the proportion equation
13,136,578.68 : 18,128,517.92 = 7,335,572.12 : x - Step 2: Convert to fraction form
13,136,578.68/18,128,517.92 = 7,335,572.12/x - Step 3: Cross multiply
13,136,578.68x = 18,128,517.92 × 7,335,572.12 - Step 4: Simplify right side
13,136,578.68x = 132,983,050,630,872.41 - Step 5: Solve for x
x = 132,983,050,630,872.41/13,136,578.68 - Step 6: Final answer
x = 10,123,111.49
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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.