Finding the Fourth Proportional to 13,390,668.90, 18,479,306.79 and 7,279,228.62
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Solution
The fourth proportional to 13,390,668.90, 18,479,306.79 and 7,279,228.62 is: 10,045,435.36
Step by Step Solution
- Step 1: Write the proportion equation
13,390,668.90 : 18,479,306.79 = 7,279,228.62 : x - Step 2: Convert to fraction form
13,390,668.90/18,479,306.79 = 7,279,228.62/x - Step 3: Cross multiply
13,390,668.90x = 18,479,306.79 × 7,279,228.62 - Step 4: Simplify right side
13,390,668.90x = 134,515,098,863,528.33 - Step 5: Solve for x
x = 134,515,098,863,528.33/13,390,668.90 - Step 6: Final answer
x = 10,045,435.36
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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.