Finding the Fourth Proportional to 21,328,739.22, 29,432,932.28 and 12,164,334.42
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Solution
The fourth proportional to 21,328,739.22, 29,432,932.28 and 12,164,334.42 is: 16,786,366.39
Step by Step Solution
- Step 1: Write the proportion equation
21,328,739.22 : 29,432,932.28 = 12,164,334.42 : x - Step 2: Convert to fraction form
21,328,739.22/29,432,932.28 = 12,164,334.42/x - Step 3: Cross multiply
21,328,739.22x = 29,432,932.28 × 12,164,334.42 - Step 4: Simplify right side
21,328,739.22x = 358,032,031,215,133.06 - Step 5: Solve for x
x = 358,032,031,215,133.06/21,328,739.22 - Step 6: Final answer
x = 16,786,366.39
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1.5x scale
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.