Finding the Fourth Proportional to 21,102,376.44, 31,637,028.65 and 8,332,439.70
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Solution
The fourth proportional to 21,102,376.44, 31,637,028.65 and 8,332,439.70 is: 12,492,130.17
Step by Step Solution
- Step 1: Write the proportion equation
21,102,376.44 : 31,637,028.65 = 8,332,439.70 : x - Step 2: Convert to fraction form
21,102,376.44/31,637,028.65 = 8,332,439.70/x - Step 3: Cross multiply
21,102,376.44x = 31,637,028.65 × 8,332,439.70 - Step 4: Simplify right side
21,102,376.44x = 263,613,633,471,635.22 - Step 5: Solve for x
x = 263,613,633,471,635.22/21,102,376.44 - Step 6: Final answer
x = 12,492,130.17
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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.