Finding the Fourth Proportional to 13,669,645.14, 18,863,903.16 and 7,474,711.68
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Solution
The fourth proportional to 13,669,645.14, 18,863,903.16 and 7,474,711.68 is: 10,314,988.86
Step by Step Solution
- Step 1: Write the proportion equation
13,669,645.14 : 18,863,903.16 = 7,474,711.68 : x - Step 2: Convert to fraction form
13,669,645.14/18,863,903.16 = 7,474,711.68/x - Step 3: Cross multiply
13,669,645.14x = 18,863,903.16 × 7,474,711.68 - Step 4: Simplify right side
13,669,645.14x = 141,002,237,280,440.91 - Step 5: Solve for x
x = 141,002,237,280,440.91/13,669,645.14 - Step 6: Final answer
x = 10,314,988.86
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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.