Finding the Fourth Proportional to 13,920,774.53, 19,212,977.69 and 8,119,556.09
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Solution
The fourth proportional to 13,920,774.53, 19,212,977.69 and 8,119,556.09 is: 11,206,334.08
Step by Step Solution
- Step 1: Write the proportion equation
13,920,774.53 : 19,212,977.69 = 8,119,556.09 : x - Step 2: Convert to fraction form
13,920,774.53/19,212,977.69 = 8,119,556.09/x - Step 3: Cross multiply
13,920,774.53x = 19,212,977.69 × 8,119,556.09 - Step 4: Simplify right side
13,920,774.53x = 156,000,849,969,275.84 - Step 5: Solve for x
x = 156,000,849,969,275.84/13,920,774.53 - Step 6: Final answer
x = 11,206,334.08
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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.