Finding the Fourth Proportional to 13,331,261.68, 18,397,101.72 and 7,219,688.56
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Solution
The fourth proportional to 13,331,261.68, 18,397,101.72 and 7,219,688.56 is: 9,963,148.88
Step by Step Solution
- Step 1: Write the proportion equation
13,331,261.68 : 18,397,101.72 = 7,219,688.56 : x - Step 2: Convert to fraction form
13,331,261.68/18,397,101.72 = 7,219,688.56/x - Step 3: Cross multiply
13,331,261.68x = 18,397,101.72 × 7,219,688.56 - Step 4: Simplify right side
13,331,261.68x = 132,821,344,825,040.31 - Step 5: Solve for x
x = 132,821,344,825,040.31/13,331,261.68 - Step 6: Final answer
x = 9,963,148.88
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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.