Finding the Fourth Proportional to 13,291,408.99, 18,342,160.73 and 7,179,837.49
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Solution
The fourth proportional to 13,291,408.99, 18,342,160.73 and 7,179,837.49 is: 9,908,184.55
Step by Step Solution
- Step 1: Write the proportion equation
13,291,408.99 : 18,342,160.73 = 7,179,837.49 : x - Step 2: Convert to fraction form
13,291,408.99/18,342,160.73 = 7,179,837.49/x - Step 3: Cross multiply
13,291,408.99x = 18,342,160.73 × 7,179,837.49 - Step 4: Simplify right side
13,291,408.99x = 131,693,733,202,029.58 - Step 5: Solve for x
x = 131,693,733,202,029.58/13,291,408.99 - Step 6: Final answer
x = 9,908,184.55
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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.