Finding the Fourth Proportional to 13,391,467.20, 18,478,929.06 and 7,511,333.76
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Solution
The fourth proportional to 13,391,467.20, 18,478,929.06 and 7,511,333.76 is: 10,364,913.84
Step by Step Solution
- Step 1: Write the proportion equation
13,391,467.20 : 18,478,929.06 = 7,511,333.76 : x - Step 2: Convert to fraction form
13,391,467.20/18,478,929.06 = 7,511,333.76/x - Step 3: Cross multiply
13,391,467.20x = 18,478,929.06 × 7,511,333.76 - Step 4: Simplify right side
13,391,467.20x = 138,801,403,697,023.05 - Step 5: Solve for x
x = 138,801,403,697,023.05/13,391,467.20 - Step 6: Final answer
x = 10,364,913.84
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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.