Finding the Fourth Proportional to 12,492,769.40, 17,239,903.58 and 6,986,081.09
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Solution
The fourth proportional to 12,492,769.40, 17,239,903.58 and 6,986,081.09 is: 9,640,725.82
Step by Step Solution
- Step 1: Write the proportion equation
12,492,769.40 : 17,239,903.58 = 6,986,081.09 : x - Step 2: Convert to fraction form
12,492,769.40/17,239,903.58 = 6,986,081.09/x - Step 3: Cross multiply
12,492,769.40x = 17,239,903.58 × 6,986,081.09 - Step 4: Simplify right side
12,492,769.40x = 120,439,364,454,226.27 - Step 5: Solve for x
x = 120,439,364,454,226.27/12,492,769.40 - Step 6: Final answer
x = 9,640,725.82
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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.