Finding the Fourth Proportional to 18,861,528.84, 28,235,901.44 and 11,551,973.10
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Solution
The fourth proportional to 18,861,528.84, 28,235,901.44 and 11,551,973.10 is: 17,293,421.79
Step by Step Solution
- Step 1: Write the proportion equation
18,861,528.84 : 28,235,901.44 = 11,551,973.10 : x - Step 2: Convert to fraction form
18,861,528.84/28,235,901.44 = 11,551,973.10/x - Step 3: Cross multiply
18,861,528.84x = 28,235,901.44 × 11,551,973.10 - Step 4: Simplify right side
18,861,528.84x = 326,180,373,889,131.25 - Step 5: Solve for x
x = 326,180,373,889,131.25/18,861,528.84 - Step 6: Final answer
x = 17,293,421.79
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Why These Related Problems?
These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.