Finding the Fourth Proportional to 19,738,145.60, 29,656,984.80 and 12,553,121.60
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Solution
The fourth proportional to 19,738,145.60, 29,656,984.80 and 12,553,121.60 is: 18,861,332.98
Step by Step Solution
- Step 1: Write the proportion equation
19,738,145.60 : 29,656,984.80 = 12,553,121.60 : x - Step 2: Convert to fraction form
19,738,145.60/29,656,984.80 = 12,553,121.60/x - Step 3: Cross multiply
19,738,145.60x = 29,656,984.80 × 12,553,121.60 - Step 4: Simplify right side
19,738,145.60x = 372,287,736,483,751.69 - Step 5: Solve for x
x = 372,287,736,483,751.69/19,738,145.60 - Step 6: Final answer
x = 18,861,332.98
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Why These Related Problems?
These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.