Finding the Fourth Proportional to 28,459,819.68, 39,274,371 and 15,406,983.60
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Solution
The fourth proportional to 28,459,819.68, 39,274,371 and 15,406,983.60 is: 21,261,539.84
Step by Step Solution
- Step 1: Write the proportion equation
28,459,819.68 : 39,274,371 = 15,406,983.60 : x - Step 2: Convert to fraction form
28,459,819.68/39,274,371 = 15,406,983.60/x - Step 3: Cross multiply
28,459,819.68x = 39,274,371 × 15,406,983.60 - Step 4: Simplify right side
28,459,819.68x = 605,099,589,897,315.62 - Step 5: Solve for x
x = 605,099,589,897,315.62/28,459,819.68 - Step 6: Final answer
x = 21,261,539.84
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1.5x scale
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.