Finding the Fourth Proportional to 28,431,347.04, 39,235,263.39 and 15,378,600.24
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Solution
The fourth proportional to 28,431,347.04, 39,235,263.39 and 15,378,600.24 is: 21,222,470.75
Step by Step Solution
- Step 1: Write the proportion equation
28,431,347.04 : 39,235,263.39 = 15,378,600.24 : x - Step 2: Convert to fraction form
28,431,347.04/39,235,263.39 = 15,378,600.24/x - Step 3: Cross multiply
28,431,347.04x = 39,235,263.39 × 15,378,600.24 - Step 4: Simplify right side
28,431,347.04x = 603,383,430,985,917.25 - Step 5: Solve for x
x = 603,383,430,985,917.25/28,431,347.04 - Step 6: Final answer
x = 21,222,470.75
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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.