Finding the Fourth Proportional to 19,960,431.48, 29,927,774.36 and 7,831,120.77
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Solution
The fourth proportional to 19,960,431.48, 29,927,774.36 and 7,831,120.77 is: 11,741,630.72
Step by Step Solution
- Step 1: Write the proportion equation
19,960,431.48 : 29,927,774.36 = 7,831,120.77 : x - Step 2: Convert to fraction form
19,960,431.48/29,927,774.36 = 7,831,120.77/x - Step 3: Cross multiply
19,960,431.48x = 29,927,774.36 × 7,831,120.77 - Step 4: Simplify right side
19,960,431.48x = 234,368,015,351,313.84 - Step 5: Solve for x
x = 234,368,015,351,313.84/19,960,431.48 - Step 6: Final answer
x = 11,741,630.72
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Why These Related Problems?
These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.