Finding the Fourth Proportional to 20,467,419.36, 28,244,960.16 and 11,299,994.88
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Solution
The fourth proportional to 20,467,419.36, 28,244,960.16 and 11,299,994.88 is: 15,593,949.56
Step by Step Solution
- Step 1: Write the proportion equation
20,467,419.36 : 28,244,960.16 = 11,299,994.88 : x - Step 2: Convert to fraction form
20,467,419.36/28,244,960.16 = 11,299,994.88/x - Step 3: Cross multiply
20,467,419.36x = 28,244,960.16 × 11,299,994.88 - Step 4: Simplify right side
20,467,419.36x = 319,167,905,193,804 - Step 5: Solve for x
x = 319,167,905,193,804/20,467,419.36 - Step 6: Final answer
x = 15,593,949.56
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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.