Finding the Fourth Proportional to 13,331,358.80, 18,398,771.43 and 7,530,514.20
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Solution
The fourth proportional to 13,331,358.80, 18,398,771.43 and 7,530,514.20 is: 10,392,954.81
Step by Step Solution
- Step 1: Write the proportion equation
13,331,358.80 : 18,398,771.43 = 7,530,514.20 : x - Step 2: Convert to fraction form
13,331,358.80/18,398,771.43 = 7,530,514.20/x - Step 3: Cross multiply
13,331,358.80x = 18,398,771.43 × 7,530,514.20 - Step 4: Simplify right side
13,331,358.80x = 138,552,209,516,169.31 - Step 5: Solve for x
x = 138,552,209,516,169.31/13,331,358.80 - Step 6: Final answer
x = 10,392,954.81
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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.