Finding the Fourth Proportional to 13,130,395.49, 18,122,969.09 and 7,699,637.09
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Solution
The fourth proportional to 13,130,395.49, 18,122,969.09 and 7,699,637.09 is: 10,627,272.05
Step by Step Solution
- Step 1: Write the proportion equation
13,130,395.49 : 18,122,969.09 = 7,699,637.09 : x - Step 2: Convert to fraction form
13,130,395.49/18,122,969.09 = 7,699,637.09/x - Step 3: Cross multiply
13,130,395.49x = 18,122,969.09 × 7,699,637.09 - Step 4: Simplify right side
13,130,395.49x = 139,540,284,947,789.36 - Step 5: Solve for x
x = 139,540,284,947,789.36/13,130,395.49 - Step 6: Final answer
x = 10,627,272.05
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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.