Finding the Fourth Proportional to 22,459.21, 30,995.12 and 12,902.09
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Solution
The fourth proportional to 22,459.21, 30,995.12 and 12,902.09 is: 17,805.69
Step by Step Solution
- Step 1: Write the proportion equation
22,459.21 : 30,995.12 = 12,902.09 : x - Step 2: Convert to fraction form
22,459.21/30,995.12 = 12,902.09/x - Step 3: Cross multiply
22,459.21x = 30,995.12 × 12,902.09 - Step 4: Simplify right side
22,459.21x = 399,901,705.08 - Step 5: Solve for x
x = 399,901,705.08/22,459.21 - Step 6: Final answer
x = 17,805.69
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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.