Finding the Fourth Proportional to 13,125,930.60, 18,113,787.57 and 7,245,568.14
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Solution
The fourth proportional to 13,125,930.60, 18,113,787.57 and 7,245,568.14 is: 9,998,885.88
Step by Step Solution
- Step 1: Write the proportion equation
13,125,930.60 : 18,113,787.57 = 7,245,568.14 : x - Step 2: Convert to fraction form
13,125,930.60/18,113,787.57 = 7,245,568.14/x - Step 3: Cross multiply
13,125,930.60x = 18,113,787.57 × 7,245,568.14 - Step 4: Simplify right side
13,125,930.60x = 131,244,682,111,920.02 - Step 5: Solve for x
x = 131,244,682,111,920.02/13,125,930.60 - Step 6: Final answer
x = 9,998,885.88
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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.