Finding the Fourth Proportional to 20,421,471.36, 30,633,453.12 and 6,589,833.60
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Solution
The fourth proportional to 20,421,471.36, 30,633,453.12 and 6,589,833.60 is: 9,885,152.50
Step by Step Solution
- Step 1: Write the proportion equation
20,421,471.36 : 30,633,453.12 = 6,589,833.60 : x - Step 2: Convert to fraction form
20,421,471.36/30,633,453.12 = 6,589,833.60/x - Step 3: Cross multiply
20,421,471.36x = 30,633,453.12 × 6,589,833.60 - Step 4: Simplify right side
20,421,471.36x = 201,869,358,654,200.81 - Step 5: Solve for x
x = 201,869,358,654,200.81/20,421,471.36 - Step 6: Final answer
x = 9,885,152.50
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1.5x scale
Why These Related Problems?
These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.