Finding the Fourth Proportional to 21,388,051.70, 29,515,518.06 and 11,598,492.98
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Solution
The fourth proportional to 21,388,051.70, 29,515,518.06 and 11,598,492.98 is: 16,005,923.95
Step by Step Solution
- Step 1: Write the proportion equation
21,388,051.70 : 29,515,518.06 = 11,598,492.98 : x - Step 2: Convert to fraction form
21,388,051.70/29,515,518.06 = 11,598,492.98/x - Step 3: Cross multiply
21,388,051.70x = 29,515,518.06 × 11,598,492.98 - Step 4: Simplify right side
21,388,051.70x = 342,335,529,019,973.19 - Step 5: Solve for x
x = 342,335,529,019,973.19/21,388,051.70 - Step 6: Final answer
x = 16,005,923.95
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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.