Finding the Fourth Proportional to 20,801,683.22, 28,706,421.26 and 11,634,325.97
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Solution
The fourth proportional to 20,801,683.22, 28,706,421.26 and 11,634,325.97 is: 16,055,424.89
Step by Step Solution
- Step 1: Write the proportion equation
20,801,683.22 : 28,706,421.26 = 11,634,325.97 : x - Step 2: Convert to fraction form
20,801,683.22/28,706,421.26 = 11,634,325.97/x - Step 3: Cross multiply
20,801,683.22x = 28,706,421.26 × 11,634,325.97 - Step 4: Simplify right side
20,801,683.22x = 333,979,862,471,830 - Step 5: Solve for x
x = 333,979,862,471,830/20,801,683.22 - Step 6: Final answer
x = 16,055,424.89
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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.