Finding the Fourth Proportional to 28,420,087.20, 39,219,692.68 and 15,367,314.84
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Solution
The fourth proportional to 28,420,087.20, 39,219,692.68 and 15,367,314.84 is: 21,206,879.53
Step by Step Solution
- Step 1: Write the proportion equation
28,420,087.20 : 39,219,692.68 = 15,367,314.84 : x - Step 2: Convert to fraction form
28,420,087.20/39,219,692.68 = 15,367,314.84/x - Step 3: Cross multiply
28,420,087.20x = 39,219,692.68 × 15,367,314.84 - Step 4: Simplify right side
28,420,087.20x = 602,701,365,341,603.38 - Step 5: Solve for x
x = 602,701,365,341,603.38/28,420,087.20 - Step 6: Final answer
x = 21,206,879.53
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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.