Finding the Fourth Proportional to 10,339,987.60, 15,516,979.80 and 4,657,286.80
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Solution
The fourth proportional to 10,339,987.60, 15,516,979.80 and 4,657,286.80 is: 6,989,082.39
Step by Step Solution
- Step 1: Write the proportion equation
10,339,987.60 : 15,516,979.80 = 4,657,286.80 : x - Step 2: Convert to fraction form
10,339,987.60/15,516,979.80 = 4,657,286.80/x - Step 3: Cross multiply
10,339,987.60x = 15,516,979.80 × 4,657,286.80 - Step 4: Simplify right side
10,339,987.60x = 72,267,025,198,406.64 - Step 5: Solve for x
x = 72,267,025,198,406.64/10,339,987.60 - Step 6: Final answer
x = 6,989,082.39
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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.