Finding the Fourth Proportional to 20,220,438.24, 27,897,391.44 and 11,512,449.41
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Solution
The fourth proportional to 20,220,438.24, 27,897,391.44 and 11,512,449.41 is: 15,883,301.03
Step by Step Solution
- Step 1: Write the proportion equation
20,220,438.24 : 27,897,391.44 = 11,512,449.41 : x - Step 2: Convert to fraction form
20,220,438.24/27,897,391.44 = 11,512,449.41/x - Step 3: Cross multiply
20,220,438.24x = 27,897,391.44 × 11,512,449.41 - Step 4: Simplify right side
20,220,438.24x = 321,167,307,484,480.06 - Step 5: Solve for x
x = 321,167,307,484,480.06/20,220,438.24 - Step 6: Final answer
x = 15,883,301.03
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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.