Finding the Fourth Proportional to 15,786,867.09, 21,785,876.74 and 8,543,523.09
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Solution
The fourth proportional to 15,786,867.09, 21,785,876.74 and 8,543,523.09 is: 11,790,061.95
Step by Step Solution
- Step 1: Write the proportion equation
15,786,867.09 : 21,785,876.74 = 8,543,523.09 : x - Step 2: Convert to fraction form
15,786,867.09/21,785,876.74 = 8,543,523.09/x - Step 3: Cross multiply
15,786,867.09x = 21,785,876.74 × 8,543,523.09 - Step 4: Simplify right side
15,786,867.09x = 186,128,141,056,460.38 - Step 5: Solve for x
x = 186,128,141,056,460.38/15,786,867.09 - Step 6: Final answer
x = 11,790,061.95
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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.