Finding the Fourth Proportional to 12,769,876.99, 19,161,541.45 and 7,382,311.03
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Solution
The fourth proportional to 12,769,876.99, 19,161,541.45 and 7,382,311.03 is: 11,077,354.85
Step by Step Solution
- Step 1: Write the proportion equation
12,769,876.99 : 19,161,541.45 = 7,382,311.03 : x - Step 2: Convert to fraction form
12,769,876.99/19,161,541.45 = 7,382,311.03/x - Step 3: Cross multiply
12,769,876.99x = 19,161,541.45 × 7,382,311.03 - Step 4: Simplify right side
12,769,876.99x = 141,456,458,759,461.25 - Step 5: Solve for x
x = 141,456,458,759,461.25/12,769,876.99 - Step 6: Final answer
x = 11,077,354.85
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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.