Finding the Fourth Proportional to 19,992,493.20, 29,988,739.80 and 12,434,221.20
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Solution
The fourth proportional to 19,992,493.20, 29,988,739.80 and 12,434,221.20 is: 18,651,331.80
Step by Step Solution
- Step 1: Write the proportion equation
19,992,493.20 : 29,988,739.80 = 12,434,221.20 : x - Step 2: Convert to fraction form
19,992,493.20/29,988,739.80 = 12,434,221.20/x - Step 3: Cross multiply
19,992,493.20x = 29,988,739.80 × 12,434,221.20 - Step 4: Simplify right side
19,992,493.20x = 372,886,624,182,443.75 - Step 5: Solve for x
x = 372,886,624,182,443.75/19,992,493.20 - Step 6: Final answer
x = 18,651,331.80
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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.