Finding the Fourth Proportional to 19,919,139.68, 27,489,820.48 and 11,099,176.45
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Solution
The fourth proportional to 19,919,139.68, 27,489,820.48 and 11,099,176.45 is: 15,317,647.89
Step by Step Solution
- Step 1: Write the proportion equation
19,919,139.68 : 27,489,820.48 = 11,099,176.45 : x - Step 2: Convert to fraction form
19,919,139.68/27,489,820.48 = 11,099,176.45/x - Step 3: Cross multiply
19,919,139.68x = 27,489,820.48 × 11,099,176.45 - Step 4: Simplify right side
19,919,139.68x = 305,114,367,948,894.62 - Step 5: Solve for x
x = 305,114,367,948,894.62/19,919,139.68 - Step 6: Final answer
x = 15,317,647.89
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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.