Finding the Fourth Proportional to 20,437.08, 28,202.26 and 11,939.99
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Solution
The fourth proportional to 20,437.08, 28,202.26 and 11,939.99 is: 16,476.65
Step by Step Solution
- Step 1: Write the proportion equation
20,437.08 : 28,202.26 = 11,939.99 : x - Step 2: Convert to fraction form
20,437.08/28,202.26 = 11,939.99/x - Step 3: Cross multiply
20,437.08x = 28,202.26 × 11,939.99 - Step 4: Simplify right side
20,437.08x = 336,734,631.87 - Step 5: Solve for x
x = 336,734,631.87/20,437.08 - Step 6: Final answer
x = 16,476.65
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1.5x scale
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.