Finding the Fourth Proportional to 21,102,378.88, 31,637,032.44 and 8,332,442.12
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Solution
The fourth proportional to 21,102,378.88, 31,637,032.44 and 8,332,442.12 is: 12,492,133.86
Step by Step Solution
- Step 1: Write the proportion equation
21,102,378.88 : 31,637,032.44 = 8,332,442.12 : x - Step 2: Convert to fraction form
21,102,378.88/31,637,032.44 = 8,332,442.12/x - Step 3: Cross multiply
21,102,378.88x = 31,637,032.44 × 8,332,442.12 - Step 4: Simplify right side
21,102,378.88x = 263,613,741,654,862.38 - Step 5: Solve for x
x = 263,613,741,654,862.38/21,102,378.88 - Step 6: Final answer
x = 12,492,133.86
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1.5x scale
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.