Finding the Fourth Proportional to 28,343,930.70, 39,112,129.19 and 15,784,036.48
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Solution
The fourth proportional to 28,343,930.70, 39,112,129.19 and 15,784,036.48 is: 21,780,580.84
Step by Step Solution
- Step 1: Write the proportion equation
28,343,930.70 : 39,112,129.19 = 15,784,036.48 : x - Step 2: Convert to fraction form
28,343,930.70/39,112,129.19 = 15,784,036.48/x - Step 3: Cross multiply
28,343,930.70x = 39,112,129.19 × 15,784,036.48 - Step 4: Simplify right side
28,343,930.70x = 617,347,274,033,783.12 - Step 5: Solve for x
x = 617,347,274,033,783.12/28,343,930.70 - Step 6: Final answer
x = 21,780,580.84
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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.