Finding the Fourth Proportional to 13,617,810.26, 18,792,012.71 and 7,422,720.68
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Solution
The fourth proportional to 13,617,810.26, 18,792,012.71 and 7,422,720.68 is: 10,243,046.32
Step by Step Solution
- Step 1: Write the proportion equation
13,617,810.26 : 18,792,012.71 = 7,422,720.68 : x - Step 2: Convert to fraction form
13,617,810.26/18,792,012.71 = 7,422,720.68/x - Step 3: Cross multiply
13,617,810.26x = 18,792,012.71 × 7,422,720.68 - Step 4: Simplify right side
13,617,810.26x = 139,487,861,279,415.03 - Step 5: Solve for x
x = 139,487,861,279,415.03/13,617,810.26 - Step 6: Final answer
x = 10,243,046.32
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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.