Finding the Fourth Proportional to 20,627,890.96, 28,467,375.18 and 11,460,533.68
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Solution
The fourth proportional to 20,627,890.96, 28,467,375.18 and 11,460,533.68 is: 15,816,028.53
Step by Step Solution
- Step 1: Write the proportion equation
20,627,890.96 : 28,467,375.18 = 11,460,533.68 : x - Step 2: Convert to fraction form
20,627,890.96/28,467,375.18 = 11,460,533.68/x - Step 3: Cross multiply
20,627,890.96x = 28,467,375.18 × 11,460,533.68 - Step 4: Simplify right side
20,627,890.96x = 326,251,312,031,586.06 - Step 5: Solve for x
x = 326,251,312,031,586.06/20,627,890.96 - Step 6: Final answer
x = 15,816,028.53
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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.