Finding the Fourth Proportional to 20,330,586.48, 28,056,209.46 and 11,163,229.26
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Solution
The fourth proportional to 20,330,586.48, 28,056,209.46 and 11,163,229.26 is: 15,405,256.44
Step by Step Solution
- Step 1: Write the proportion equation
20,330,586.48 : 28,056,209.46 = 11,163,229.26 : x - Step 2: Convert to fraction form
20,330,586.48/28,056,209.46 = 11,163,229.26/x - Step 3: Cross multiply
20,330,586.48x = 28,056,209.46 × 11,163,229.26 - Step 4: Simplify right side
20,330,586.48x = 313,197,898,368,560.81 - Step 5: Solve for x
x = 313,197,898,368,560.81/20,330,586.48 - Step 6: Final answer
x = 15,405,256.44
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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.