Finding the Fourth Proportional to 20,407,434.62, 28,162,288.53 and 11,115,041.06
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Solution
The fourth proportional to 20,407,434.62, 28,162,288.53 and 11,115,041.06 is: 15,338,772.32
Step by Step Solution
- Step 1: Write the proportion equation
20,407,434.62 : 28,162,288.53 = 11,115,041.06 : x - Step 2: Convert to fraction form
20,407,434.62/28,162,288.53 = 11,115,041.06/x - Step 3: Cross multiply
20,407,434.62x = 28,162,288.53 × 11,115,041.06 - Step 4: Simplify right side
20,407,434.62x = 313,024,993,354,517.06 - Step 5: Solve for x
x = 313,024,993,354,517.06/20,407,434.62 - Step 6: Final answer
x = 15,338,772.32
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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.