Finding the Fourth Proportional to 20,429,850.96, 28,193,506.92 and 11,137,427.28
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Solution
The fourth proportional to 20,429,850.96, 28,193,506.92 and 11,137,427.28 is: 15,369,820.06
Step by Step Solution
- Step 1: Write the proportion equation
20,429,850.96 : 28,193,506.92 = 11,137,427.28 : x - Step 2: Convert to fraction form
20,429,850.96/28,193,506.92 = 11,137,427.28/x - Step 3: Cross multiply
20,429,850.96x = 28,193,506.92 × 11,137,427.28 - Step 4: Simplify right side
20,429,850.96x = 314,003,133,089,676.75 - Step 5: Solve for x
x = 314,003,133,089,676.75/20,429,850.96 - Step 6: Final answer
x = 15,369,820.06
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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.