Finding the Fourth Proportional to 20,117.70, 30,169.70 and 6,966.99
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Solution
The fourth proportional to 20,117.70, 30,169.70 and 6,966.99 is: 10,448.11
Step by Step Solution
- Step 1: Write the proportion equation
20,117.70 : 30,169.70 = 6,966.99 : x - Step 2: Convert to fraction form
20,117.70/30,169.70 = 6,966.99/x - Step 3: Cross multiply
20,117.70x = 30,169.70 × 6,966.99 - Step 4: Simplify right side
20,117.70x = 210,191,963.37 - Step 5: Solve for x
x = 210,191,963.37/20,117.70 - Step 6: Final answer
x = 10,448.11
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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.