Finding the Fourth Proportional to 18,386,972.80, 27,538,468.80 and 10,828,700.80
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Solution
The fourth proportional to 18,386,972.80, 27,538,468.80 and 10,828,700.80 is: 16,218,321.65
Step by Step Solution
- Step 1: Write the proportion equation
18,386,972.80 : 27,538,468.80 = 10,828,700.80 : x - Step 2: Convert to fraction form
18,386,972.80/27,538,468.80 = 10,828,700.80/x - Step 3: Cross multiply
18,386,972.80x = 27,538,468.80 × 10,828,700.80 - Step 4: Simplify right side
18,386,972.80x = 298,205,839,125,335.06 - Step 5: Solve for x
x = 298,205,839,125,335.06/18,386,972.80 - Step 6: Final answer
x = 16,218,321.65
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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.