Finding the Fourth Proportional to 19,485,235.20, 29,236,147.20 and 12,302,284.80
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Solution
The fourth proportional to 19,485,235.20, 29,236,147.20 and 12,302,284.80 is: 18,458,663.99
Step by Step Solution
- Step 1: Write the proportion equation
19,485,235.20 : 29,236,147.20 = 12,302,284.80 : x - Step 2: Convert to fraction form
19,485,235.20/29,236,147.20 = 12,302,284.80/x - Step 3: Cross multiply
19,485,235.20x = 29,236,147.20 × 12,302,284.80 - Step 4: Simplify right side
19,485,235.20x = 359,671,409,309,122.56 - Step 5: Solve for x
x = 359,671,409,309,122.56/19,485,235.20 - Step 6: Final answer
x = 18,458,663.99
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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.