Finding the Fourth Proportional to 11,006,878.80, 15,190,891.20 and 6,655,995.12
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Solution
The fourth proportional to 11,006,878.80, 15,190,891.20 and 6,655,995.12 is: 9,186,118.93
Step by Step Solution
- Step 1: Write the proportion equation
11,006,878.80 : 15,190,891.20 = 6,655,995.12 : x - Step 2: Convert to fraction form
11,006,878.80/15,190,891.20 = 6,655,995.12/x - Step 3: Cross multiply
11,006,878.80x = 15,190,891.20 × 6,655,995.12 - Step 4: Simplify right side
11,006,878.80x = 101,110,497,695,650.94 - Step 5: Solve for x
x = 101,110,497,695,650.94/11,006,878.80 - Step 6: Final answer
x = 9,186,118.93
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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.