Finding the Fourth Proportional to 20,638,415.68, 30,957,526.08 and 5,285,676.16
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Solution
The fourth proportional to 20,638,415.68, 30,957,526.08 and 5,285,676.16 is: 7,928,489.28
Step by Step Solution
- Step 1: Write the proportion equation
20,638,415.68 : 30,957,526.08 = 5,285,676.16 : x - Step 2: Convert to fraction form
20,638,415.68/30,957,526.08 = 5,285,676.16/x - Step 3: Cross multiply
20,638,415.68x = 30,957,526.08 × 5,285,676.16 - Step 4: Simplify right side
20,638,415.68x = 163,631,457,573,634.25 - Step 5: Solve for x
x = 163,631,457,573,634.25/20,638,415.68 - Step 6: Final answer
x = 7,928,489.28
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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.