Finding the Fourth Proportional to 13,331,643.59, 18,397,668.16 and 7,220,072.09
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Solution
The fourth proportional to 13,331,643.59, 18,397,668.16 and 7,220,072.09 is: 9,963,699.48
Step by Step Solution
- Step 1: Write the proportion equation
13,331,643.59 : 18,397,668.16 = 7,220,072.09 : x - Step 2: Convert to fraction form
13,331,643.59/18,397,668.16 = 7,220,072.09/x - Step 3: Cross multiply
13,331,643.59x = 18,397,668.16 × 7,220,072.09 - Step 4: Simplify right side
13,331,643.59x = 132,832,490,275,008.97 - Step 5: Solve for x
x = 132,832,490,275,008.97/13,331,643.59 - Step 6: Final answer
x = 9,963,699.48
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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.