Finding the Fourth Proportional to 21,581,758.70, 32,372,638.05 and 20,586,430.70
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Solution
The fourth proportional to 21,581,758.70, 32,372,638.05 and 20,586,430.70 is: 30,879,646.05
Step by Step Solution
- Step 1: Write the proportion equation
21,581,758.70 : 32,372,638.05 = 20,586,430.70 : x - Step 2: Convert to fraction form
21,581,758.70/32,372,638.05 = 20,586,430.70/x - Step 3: Cross multiply
21,581,758.70x = 32,372,638.05 × 20,586,430.70 - Step 4: Simplify right side
21,581,758.70x = 666,437,069,792,508.12 - Step 5: Solve for x
x = 666,437,069,792,508.12/21,581,758.70 - Step 6: Final answer
x = 30,879,646.05
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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.