Finding the Fourth Proportional to 13,120,756.74, 18,106,496.87 and 7,240,436.19
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Solution
The fourth proportional to 13,120,756.74, 18,106,496.87 and 7,240,436.19 is: 9,991,720.58
Step by Step Solution
- Step 1: Write the proportion equation
13,120,756.74 : 18,106,496.87 = 7,240,436.19 : x - Step 2: Convert to fraction form
13,120,756.74/18,106,496.87 = 7,240,436.19/x - Step 3: Cross multiply
13,120,756.74x = 18,106,496.87 × 7,240,436.19 - Step 4: Simplify right side
13,120,756.74x = 131,098,935,175,467.55 - Step 5: Solve for x
x = 131,098,935,175,467.55/13,120,756.74 - Step 6: Final answer
x = 9,991,720.58
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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.