Finding the Fourth Proportional to 19,965,138.80, 27,551,891.48 and 10,797,781.55
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Solution
The fourth proportional to 19,965,138.80, 27,551,891.48 and 10,797,781.55 is: 14,900,938.50
Step by Step Solution
- Step 1: Write the proportion equation
19,965,138.80 : 27,551,891.48 = 10,797,781.55 : x - Step 2: Convert to fraction form
19,965,138.80/27,551,891.48 = 10,797,781.55/x - Step 3: Cross multiply
19,965,138.80x = 27,551,891.48 × 10,797,781.55 - Step 4: Simplify right side
19,965,138.80x = 297,499,305,298,597.81 - Step 5: Solve for x
x = 297,499,305,298,597.81/19,965,138.80 - Step 6: Final answer
x = 14,900,938.50
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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.