Finding the Fourth Proportional to 20,887.98, 31,315.53 and 10,350.75
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Solution
The fourth proportional to 20,887.98, 31,315.53 and 10,350.75 is: 15,517.99
Step by Step Solution
- Step 1: Write the proportion equation
20,887.98 : 31,315.53 = 10,350.75 : x - Step 2: Convert to fraction form
20,887.98/31,315.53 = 10,350.75/x - Step 3: Cross multiply
20,887.98x = 31,315.53 × 10,350.75 - Step 4: Simplify right side
20,887.98x = 324,139,320.17 - Step 5: Solve for x
x = 324,139,320.17/20,887.98 - Step 6: Final answer
x = 15,517.99
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1.5x scale
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.