Finding the Fourth Proportional to 21,328,731.22, 29,432,921.25 and 12,164,326.42
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Solution
The fourth proportional to 21,328,731.22, 29,432,921.25 and 12,164,326.42 is: 16,786,355.36
Step by Step Solution
- Step 1: Write the proportion equation
21,328,731.22 : 29,432,921.25 = 12,164,326.42 : x - Step 2: Convert to fraction form
21,328,731.22/29,432,921.25 = 12,164,326.42/x - Step 3: Cross multiply
21,328,731.22x = 29,432,921.25 × 12,164,326.42 - Step 4: Simplify right side
21,328,731.22x = 358,031,661,579,154.44 - Step 5: Solve for x
x = 358,031,661,579,154.44/21,328,731.22 - Step 6: Final answer
x = 16,786,355.36
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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.