Finding the Fourth Proportional to 20,809,799.28, 31,217,689.85 and 6,433,988.09
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Solution
The fourth proportional to 20,809,799.28, 31,217,689.85 and 6,433,988.09 is: 9,651,906.86
Step by Step Solution
- Step 1: Write the proportion equation
20,809,799.28 : 31,217,689.85 = 6,433,988.09 : x - Step 2: Convert to fraction form
20,809,799.28/31,217,689.85 = 6,433,988.09/x - Step 3: Cross multiply
20,809,799.28x = 31,217,689.85 × 6,433,988.09 - Step 4: Simplify right side
20,809,799.28x = 200,854,244,503,955.50 - Step 5: Solve for x
x = 200,854,244,503,955.50/20,809,799.28 - Step 6: Final answer
x = 9,651,906.86
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Why These Related Problems?
These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.