Finding the Fourth Proportional to 28,715,588.44, 39,627,988.26 and 15,662,850.76
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Solution
The fourth proportional to 28,715,588.44, 39,627,988.26 and 15,662,850.76 is: 21,614,993.80
Step by Step Solution
- Step 1: Write the proportion equation
28,715,588.44 : 39,627,988.26 = 15,662,850.76 : x - Step 2: Convert to fraction form
28,715,588.44/39,627,988.26 = 15,662,850.76/x - Step 3: Cross multiply
28,715,588.44x = 39,627,988.26 × 15,662,850.76 - Step 4: Simplify right side
28,715,588.44x = 620,687,266,035,412 - Step 5: Solve for x
x = 620,687,266,035,412/28,715,588.44 - Step 6: Final answer
x = 21,614,993.80
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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.