Finding the Fourth Proportional to 20,330,600.48, 28,056,228.80 and 11,163,243.28
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Solution
The fourth proportional to 20,330,600.48, 28,056,228.80 and 11,163,243.28 is: 15,405,275.80
Step by Step Solution
- Step 1: Write the proportion equation
20,330,600.48 : 28,056,228.80 = 11,163,243.28 : x - Step 2: Convert to fraction form
20,330,600.48/28,056,228.80 = 11,163,243.28/x - Step 3: Cross multiply
20,330,600.48x = 28,056,228.80 × 11,163,243.28 - Step 4: Simplify right side
20,330,600.48x = 313,198,507,613,742.44 - Step 5: Solve for x
x = 313,198,507,613,742.44/20,330,600.48 - Step 6: Final answer
x = 15,405,275.80
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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.