Finding the Fourth Proportional to 12,645,821.36, 18,968,745 and 5,918,959.28
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Solution
The fourth proportional to 12,645,821.36, 18,968,745 and 5,918,959.28 is: 8,878,444.99
Step by Step Solution
- Step 1: Write the proportion equation
12,645,821.36 : 18,968,745 = 5,918,959.28 : x - Step 2: Convert to fraction form
12,645,821.36/18,968,745 = 5,918,959.28/x - Step 3: Cross multiply
12,645,821.36x = 18,968,745 × 5,918,959.28 - Step 4: Simplify right side
12,645,821.36x = 112,275,229,247,703.61 - Step 5: Solve for x
x = 112,275,229,247,703.61/12,645,821.36 - Step 6: Final answer
x = 8,878,444.99
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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.