Finding the Fourth Proportional to 12,157,465.31, 16,782,293.49 and 8,242,583.44
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Solution
The fourth proportional to 12,157,465.31, 16,782,293.49 and 8,242,583.44 is: 11,378,149.21
Step by Step Solution
- Step 1: Write the proportion equation
12,157,465.31 : 16,782,293.49 = 8,242,583.44 : x - Step 2: Convert to fraction form
12,157,465.31/16,782,293.49 = 8,242,583.44/x - Step 3: Cross multiply
12,157,465.31x = 16,782,293.49 × 8,242,583.44 - Step 4: Simplify right side
12,157,465.31x = 138,329,454,363,938.06 - Step 5: Solve for x
x = 138,329,454,363,938.06/12,157,465.31 - Step 6: Final answer
x = 11,378,149.21
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1.5x scale
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.