Finding the Fourth Proportional to 15,148,818.87, 20,905,393.37 and 8,622,448.26
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Solution
The fourth proportional to 15,148,818.87, 20,905,393.37 and 8,622,448.26 is: 11,898,991.88
Step by Step Solution
- Step 1: Write the proportion equation
15,148,818.87 : 20,905,393.37 = 8,622,448.26 : x - Step 2: Convert to fraction form
15,148,818.87/20,905,393.37 = 8,622,448.26/x - Step 3: Cross multiply
15,148,818.87x = 20,905,393.37 × 8,622,448.26 - Step 4: Simplify right side
15,148,818.87x = 180,255,672,641,287.84 - Step 5: Solve for x
x = 180,255,672,641,287.84/15,148,818.87 - Step 6: Final answer
x = 11,898,991.88
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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.