Finding the Fourth Proportional to 15,087,956.98, 20,820,801.99 and 8,561,197.21
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Solution
The fourth proportional to 15,087,956.98, 20,820,801.99 and 8,561,197.21 is: 11,814,123.82
Step by Step Solution
- Step 1: Write the proportion equation
15,087,956.98 : 20,820,801.99 = 8,561,197.21 : x - Step 2: Convert to fraction form
15,087,956.98/20,820,801.99 = 8,561,197.21/x - Step 3: Cross multiply
15,087,956.98x = 20,820,801.99 × 8,561,197.21 - Step 4: Simplify right side
15,087,956.98x = 178,250,991,906,750.44 - Step 5: Solve for x
x = 178,250,991,906,750.44/15,087,956.98 - Step 6: Final answer
x = 11,814,123.82
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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.