Finding the Fourth Proportional to 20,478,644.42, 28,258,121.58 and 11,310,740.42
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Solution
The fourth proportional to 20,478,644.42, 28,258,121.58 and 11,310,740.42 is: 15,607,491.95
Step by Step Solution
- Step 1: Write the proportion equation
20,478,644.42 : 28,258,121.58 = 11,310,740.42 : x - Step 2: Convert to fraction form
20,478,644.42/28,258,121.58 = 11,310,740.42/x - Step 3: Cross multiply
20,478,644.42x = 28,258,121.58 × 11,310,740.42 - Step 4: Simplify right side
20,478,644.42x = 319,620,277,948,180.25 - Step 5: Solve for x
x = 319,620,277,948,180.25/20,478,644.42 - Step 6: Final answer
x = 15,607,491.95
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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.