Finding the Fourth Proportional to 15,609,286.95, 21,540,856.99 and 8,640,445.06
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Solution
The fourth proportional to 15,609,286.95, 21,540,856.99 and 8,640,445.06 is: 11,923,836.88
Step by Step Solution
- Step 1: Write the proportion equation
15,609,286.95 : 21,540,856.99 = 8,640,445.06 : x - Step 2: Convert to fraction form
15,609,286.95/21,540,856.99 = 8,640,445.06/x - Step 3: Cross multiply
15,609,286.95x = 21,540,856.99 × 8,640,445.06 - Step 4: Simplify right side
15,609,286.95x = 186,122,591,388,937.75 - Step 5: Solve for x
x = 186,122,591,388,937.75/15,609,286.95 - Step 6: Final answer
x = 11,923,836.88
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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.