Finding the Fourth Proportional to 21,405,321.36, 29,539,363.68 and 12,238,156.08
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Solution
The fourth proportional to 21,405,321.36, 29,539,363.68 and 12,238,156.08 is: 16,888,666.94
Step by Step Solution
- Step 1: Write the proportion equation
21,405,321.36 : 29,539,363.68 = 12,238,156.08 : x - Step 2: Convert to fraction form
21,405,321.36/29,539,363.68 = 12,238,156.08/x - Step 3: Cross multiply
21,405,321.36x = 29,539,363.68 × 12,238,156.08 - Step 4: Simplify right side
21,405,321.36x = 361,507,343,219,723.19 - Step 5: Solve for x
x = 361,507,343,219,723.19/21,405,321.36 - Step 6: Final answer
x = 16,888,666.94
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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.