Finding the Fourth Proportional to 12,979,224.12, 17,909,339.62 and 7,471,534.79
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Solution
The fourth proportional to 12,979,224.12, 17,909,339.62 and 7,471,534.79 is: 10,309,572.65
Step by Step Solution
- Step 1: Write the proportion equation
12,979,224.12 : 17,909,339.62 = 7,471,534.79 : x - Step 2: Convert to fraction form
12,979,224.12/17,909,339.62 = 7,471,534.79/x - Step 3: Cross multiply
12,979,224.12x = 17,909,339.62 × 7,471,534.79 - Step 4: Simplify right side
12,979,224.12x = 133,810,254,036,755.39 - Step 5: Solve for x
x = 133,810,254,036,755.39/12,979,224.12 - Step 6: Final answer
x = 10,309,572.65
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Why These Related Problems?
These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.