Finding the Fourth Proportional to 19,681,789.10, 27,160,880.62 and 10,979,961.70
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Solution
The fourth proportional to 19,681,789.10, 27,160,880.62 and 10,979,961.70 is: 15,152,353.65
Step by Step Solution
- Step 1: Write the proportion equation
19,681,789.10 : 27,160,880.62 = 10,979,961.70 : x - Step 2: Convert to fraction form
19,681,789.10/27,160,880.62 = 10,979,961.70/x - Step 3: Cross multiply
19,681,789.10x = 27,160,880.62 × 10,979,961.70 - Step 4: Simplify right side
19,681,789.10x = 298,225,428,945,872.25 - Step 5: Solve for x
x = 298,225,428,945,872.25/19,681,789.10 - Step 6: Final answer
x = 15,152,353.65
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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.