Finding the Fourth Proportional to 19,310,939.12, 28,991,739.48 and 12,949,665.68
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Solution
The fourth proportional to 19,310,939.12, 28,991,739.48 and 12,949,665.68 is: 19,441,485.03
Step by Step Solution
- Step 1: Write the proportion equation
19,310,939.12 : 28,991,739.48 = 12,949,665.68 : x - Step 2: Convert to fraction form
19,310,939.12/28,991,739.48 = 12,949,665.68/x - Step 3: Cross multiply
19,310,939.12x = 28,991,739.48 × 12,949,665.68 - Step 4: Simplify right side
19,310,939.12x = 375,433,333,747,657.06 - Step 5: Solve for x
x = 375,433,333,747,657.06/19,310,939.12 - Step 6: Final answer
x = 19,441,485.03
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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.