Finding the Fourth Proportional to 21,425,919.97, 29,569,593.09 and 12,135,142.79
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Solution
The fourth proportional to 21,425,919.97, 29,569,593.09 and 12,135,142.79 is: 16,747,529.86
Step by Step Solution
- Step 1: Write the proportion equation
21,425,919.97 : 29,569,593.09 = 12,135,142.79 : x - Step 2: Convert to fraction form
21,425,919.97/29,569,593.09 = 12,135,142.79/x - Step 3: Cross multiply
21,425,919.97x = 29,569,593.09 × 12,135,142.79 - Step 4: Simplify right side
21,425,919.97x = 358,831,234,422,417.06 - Step 5: Solve for x
x = 358,831,234,422,417.06/21,425,919.97 - Step 6: Final answer
x = 16,747,529.86
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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.