Finding the Fourth Proportional to 13,238,448.04, 18,268,949.82 and 7,437,107.62
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Solution
The fourth proportional to 13,238,448.04, 18,268,949.82 and 7,437,107.62 is: 10,263,147.58
Step by Step Solution
- Step 1: Write the proportion equation
13,238,448.04 : 18,268,949.82 = 7,437,107.62 : x - Step 2: Convert to fraction form
13,238,448.04/18,268,949.82 = 7,437,107.62/x - Step 3: Cross multiply
13,238,448.04x = 18,268,949.82 × 7,437,107.62 - Step 4: Simplify right side
13,238,448.04x = 135,868,145,915,719.62 - Step 5: Solve for x
x = 135,868,145,915,719.62/13,238,448.04 - Step 6: Final answer
x = 10,263,147.58
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1.5x scale
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.