Finding the Fourth Proportional to 13,920,774.28, 19,212,977.34 and 8,119,555.84
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Solution
The fourth proportional to 13,920,774.28, 19,212,977.34 and 8,119,555.84 is: 11,206,333.73
Step by Step Solution
- Step 1: Write the proportion equation
13,920,774.28 : 19,212,977.34 = 8,119,555.84 : x - Step 2: Convert to fraction form
13,920,774.28/19,212,977.34 = 8,119,555.84/x - Step 3: Cross multiply
13,920,774.28x = 19,212,977.34 × 8,119,555.84 - Step 4: Simplify right side
13,920,774.28x = 156,000,842,364,784.66 - Step 5: Solve for x
x = 156,000,842,364,784.66/13,920,774.28 - Step 6: Final answer
x = 11,206,333.73
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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.