Finding the Fourth Proportional to 13,122,992,310.24, 18,109,729,386 and 7,182,544,812.96
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Solution
The fourth proportional to 13,122,992,310.24, 18,109,729,386 and 7,182,544,812.96 is: 9,911,911,840.72
Step by Step Solution
- Step 1: Write the proportion equation
13,122,992,310.24 : 18,109,729,386 = 7,182,544,812.96 : x - Step 2: Convert to fraction form
13,122,992,310.24/18,109,729,386 = 7,182,544,812.96/x - Step 3: Cross multiply
13,122,992,310.24x = 18,109,729,386 × 7,182,544,812.96 - Step 4: Simplify right side
13,122,992,310.24x = 130,073,942,865,523,589,120 - Step 5: Solve for x
x = 130,073,942,865,523,589,120/13,122,992,310.24 - Step 6: Final answer
x = 9,911,911,840.72
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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.