Finding the Fourth Proportional to 13,578,057.92, 18,737,697.12 and 7,778,717.12
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Solution
The fourth proportional to 13,578,057.92, 18,737,697.12 and 7,778,717.12 is: 10,734,616.56
Step by Step Solution
- Step 1: Write the proportion equation
13,578,057.92 : 18,737,697.12 = 7,778,717.12 : x - Step 2: Convert to fraction form
13,578,057.92/18,737,697.12 = 7,778,717.12/x - Step 3: Cross multiply
13,578,057.92x = 18,737,697.12 × 7,778,717.12 - Step 4: Simplify right side
13,578,057.92x = 145,755,245,376,718.72 - Step 5: Solve for x
x = 145,755,245,376,718.72/13,578,057.92 - Step 6: Final answer
x = 10,734,616.56
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1.5x scale
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.