Finding the Fourth Proportional to 21,291,297.93, 29,381,962.28 and 12,123,940.68
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Solution
The fourth proportional to 21,291,297.93, 29,381,962.28 and 12,123,940.68 is: 16,731,021.70
Step by Step Solution
- Step 1: Write the proportion equation
21,291,297.93 : 29,381,962.28 = 12,123,940.68 : x - Step 2: Convert to fraction form
21,291,297.93/29,381,962.28 = 12,123,940.68/x - Step 3: Cross multiply
21,291,297.93x = 29,381,962.28 × 12,123,940.68 - Step 4: Simplify right side
21,291,297.93x = 356,225,167,684,097.81 - Step 5: Solve for x
x = 356,225,167,684,097.81/21,291,297.93 - Step 6: Final answer
x = 16,731,021.70
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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.