Finding the Fourth Proportional to 13,343,902.86, 18,415,521.87 and 7,542,732.18
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Solution
The fourth proportional to 13,343,902.86, 18,415,521.87 and 7,542,732.18 is: 10,409,499.45
Step by Step Solution
- Step 1: Write the proportion equation
13,343,902.86 : 18,415,521.87 = 7,542,732.18 : x - Step 2: Convert to fraction form
13,343,902.86/18,415,521.87 = 7,542,732.18/x - Step 3: Cross multiply
13,343,902.86x = 18,415,521.87 × 7,542,732.18 - Step 4: Simplify right side
13,343,902.86x = 138,903,349,420,342.78 - Step 5: Solve for x
x = 138,903,349,420,342.78/13,343,902.86 - Step 6: Final answer
x = 10,409,499.45
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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.