Finding the Fourth Proportional to 13,320,291.42, 18,382,001.99 and 7,208,719.92
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Solution
The fourth proportional to 13,320,291.42, 18,382,001.99 and 7,208,719.92 is: 9,948,033.40
Step by Step Solution
- Step 1: Write the proportion equation
13,320,291.42 : 18,382,001.99 = 7,208,719.92 : x - Step 2: Convert to fraction form
13,320,291.42/18,382,001.99 = 7,208,719.92/x - Step 3: Cross multiply
13,320,291.42x = 18,382,001.99 × 7,208,719.92 - Step 4: Simplify right side
13,320,291.42x = 132,510,703,878,749.03 - Step 5: Solve for x
x = 132,510,703,878,749.03/13,320,291.42 - Step 6: Final answer
x = 9,948,033.40
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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.