Finding the Fourth Proportional to 21,135,842.25, 29,167,774.23 and 12,315,102.63
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Solution
The fourth proportional to 21,135,842.25, 29,167,774.23 and 12,315,102.63 is: 16,995,023.38
Step by Step Solution
- Step 1: Write the proportion equation
21,135,842.25 : 29,167,774.23 = 12,315,102.63 : x - Step 2: Convert to fraction form
21,135,842.25/29,167,774.23 = 12,315,102.63/x - Step 3: Cross multiply
21,135,842.25x = 29,167,774.23 × 12,315,102.63 - Step 4: Simplify right side
21,135,842.25x = 359,204,133,131,119.25 - Step 5: Solve for x
x = 359,204,133,131,119.25/21,135,842.25 - Step 6: Final answer
x = 16,995,023.38
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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.