Finding the Fourth Proportional to 13,135,721.28, 18,130,317.60 and 7,704,962.88
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Solution
The fourth proportional to 13,135,721.28, 18,130,317.60 and 7,704,962.88 is: 10,634,621.51
Step by Step Solution
- Step 1: Write the proportion equation
13,135,721.28 : 18,130,317.60 = 7,704,962.88 : x - Step 2: Convert to fraction form
13,135,721.28/18,130,317.60 = 7,704,962.88/x - Step 3: Cross multiply
13,135,721.28x = 18,130,317.60 × 7,704,962.88 - Step 4: Simplify right side
13,135,721.28x = 139,693,424,110,610.70 - Step 5: Solve for x
x = 139,693,424,110,610.70/13,135,721.28 - Step 6: Final answer
x = 10,634,621.51
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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.