Finding the Fourth Proportional to 13,565,623.75, 18,720,556.47 and 7,454,445.91
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Solution
The fourth proportional to 13,565,623.75, 18,720,556.47 and 7,454,445.91 is: 10,287,132.99
Step by Step Solution
- Step 1: Write the proportion equation
13,565,623.75 : 18,720,556.47 = 7,454,445.91 : x - Step 2: Convert to fraction form
13,565,623.75/18,720,556.47 = 7,454,445.91/x - Step 3: Cross multiply
13,565,623.75x = 18,720,556.47 × 7,454,445.91 - Step 4: Simplify right side
13,565,623.75x = 139,551,375,610,715.53 - Step 5: Solve for x
x = 139,551,375,610,715.53/13,565,623.75 - Step 6: Final answer
x = 10,287,132.99
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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.