Finding the Fourth Proportional to 21,575,529.76, 29,775,136.08 and 12,408,179.84
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Solution
The fourth proportional to 21,575,529.76, 29,775,136.08 and 12,408,179.84 is: 17,123,808.66
Step by Step Solution
- Step 1: Write the proportion equation
21,575,529.76 : 29,775,136.08 = 12,408,179.84 : x - Step 2: Convert to fraction form
21,575,529.76/29,775,136.08 = 12,408,179.84/x - Step 3: Cross multiply
21,575,529.76x = 29,775,136.08 × 12,408,179.84 - Step 4: Simplify right side
21,575,529.76x = 369,455,243,241,112.62 - Step 5: Solve for x
x = 369,455,243,241,112.62/21,575,529.76 - Step 6: Final answer
x = 17,123,808.66
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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.