Finding the Fourth Proportional to 15,403,049.93, 21,256,214.06 and 8,434,168.27
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Solution
The fourth proportional to 15,403,049.93, 21,256,214.06 and 8,434,168.27 is: 11,639,155.03
Step by Step Solution
- Step 1: Write the proportion equation
15,403,049.93 : 21,256,214.06 = 8,434,168.27 : x - Step 2: Convert to fraction form
15,403,049.93/21,256,214.06 = 8,434,168.27/x - Step 3: Cross multiply
15,403,049.93x = 21,256,214.06 × 8,434,168.27 - Step 4: Simplify right side
15,403,049.93x = 179,278,486,133,124.75 - Step 5: Solve for x
x = 179,278,486,133,124.75/15,403,049.93 - Step 6: Final answer
x = 11,639,155.03
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1.5x scale
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.