Finding the Fourth Proportional to 28,715,745.48, 39,627,853.46 and 15,663,284.76
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Solution
The fourth proportional to 28,715,745.48, 39,627,853.46 and 15,663,284.76 is: 21,615,400.99
Step by Step Solution
- Step 1: Write the proportion equation
28,715,745.48 : 39,627,853.46 = 15,663,284.76 : x - Step 2: Convert to fraction form
28,715,745.48/39,627,853.46 = 15,663,284.76/x - Step 3: Cross multiply
28,715,745.48x = 39,627,853.46 × 15,663,284.76 - Step 4: Simplify right side
28,715,745.48x = 620,702,353,171,531.25 - Step 5: Solve for x
x = 620,702,353,171,531.25/28,715,745.48 - Step 6: Final answer
x = 21,615,400.99
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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.