Finding the Fourth Proportional to 13,203,772.12, 19,805,497.80 and 3,619,142.56
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Solution
The fourth proportional to 13,203,772.12, 19,805,497.80 and 3,619,142.56 is: 5,428,669.88
Step by Step Solution
- Step 1: Write the proportion equation
13,203,772.12 : 19,805,497.80 = 3,619,142.56 : x - Step 2: Convert to fraction form
13,203,772.12/19,805,497.80 = 3,619,142.56/x - Step 3: Cross multiply
13,203,772.12x = 19,805,497.80 × 3,619,142.56 - Step 4: Simplify right side
13,203,772.12x = 71,678,920,009,966.38 - Step 5: Solve for x
x = 71,678,920,009,966.38/13,203,772.12 - Step 6: Final answer
x = 5,428,669.88
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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.