Finding the Fourth Proportional to 13,579,228.26, 18,738,961.20 and 7,467,656.76
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Solution
The fourth proportional to 13,579,228.26, 18,738,961.20 and 7,467,656.76 is: 10,305,160.76
Step by Step Solution
- Step 1: Write the proportion equation
13,579,228.26 : 18,738,961.20 = 7,467,656.76 : x - Step 2: Convert to fraction form
13,579,228.26/18,738,961.20 = 7,467,656.76/x - Step 3: Cross multiply
13,579,228.26x = 18,738,961.20 × 7,467,656.76 - Step 4: Simplify right side
13,579,228.26x = 139,936,130,280,557.70 - Step 5: Solve for x
x = 139,936,130,280,557.70/13,579,228.26 - Step 6: Final answer
x = 10,305,160.76
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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.