Finding the Fourth Proportional to 13,471,261.20, 20,206,891.80 and 6,651,101.70
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Solution
The fourth proportional to 13,471,261.20, 20,206,891.80 and 6,651,101.70 is: 9,976,652.55
Step by Step Solution
- Step 1: Write the proportion equation
13,471,261.20 : 20,206,891.80 = 6,651,101.70 : x - Step 2: Convert to fraction form
13,471,261.20/20,206,891.80 = 6,651,101.70/x - Step 3: Cross multiply
13,471,261.20x = 20,206,891.80 × 6,651,101.70 - Step 4: Simplify right side
13,471,261.20x = 134,398,092,402,696.06 - Step 5: Solve for x
x = 134,398,092,402,696.06/13,471,261.20 - Step 6: Final answer
x = 9,976,652.55
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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.