Finding the Fourth Proportional to 28,115,142.75, 38,787,450.68 and 18,322,019.19
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Solution
The fourth proportional to 28,115,142.75, 38,787,450.68 and 18,322,019.19 is: 25,276,927.17
Step by Step Solution
- Step 1: Write the proportion equation
28,115,142.75 : 38,787,450.68 = 18,322,019.19 : x - Step 2: Convert to fraction form
28,115,142.75/38,787,450.68 = 18,322,019.19/x - Step 3: Cross multiply
28,115,142.75x = 38,787,450.68 × 18,322,019.19 - Step 4: Simplify right side
28,115,142.75x = 710,664,415,767,754.25 - Step 5: Solve for x
x = 710,664,415,767,754.25/28,115,142.75 - Step 6: Final answer
x = 25,276,927.17
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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.