Finding the Fourth Proportional to 11,145,345.68, 15,366,339.30 and 7,218,163.46
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Solution
The fourth proportional to 11,145,345.68, 15,366,339.30 and 7,218,163.46 is: 9,951,844.66
Step by Step Solution
- Step 1: Write the proportion equation
11,145,345.68 : 15,366,339.30 = 7,218,163.46 : x - Step 2: Convert to fraction form
11,145,345.68/15,366,339.30 = 7,218,163.46/x - Step 3: Cross multiply
11,145,345.68x = 15,366,339.30 × 7,218,163.46 - Step 4: Simplify right side
11,145,345.68x = 110,916,748,849,221.98 - Step 5: Solve for x
x = 110,916,748,849,221.98/11,145,345.68 - Step 6: Final answer
x = 9,951,844.66
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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.