Finding the Fourth Proportional to 28,979,553.08, 39,990,937.74 and 16,589,235.80
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Solution
The fourth proportional to 28,979,553.08, 39,990,937.74 and 16,589,235.80 is: 22,892,661.39
Step by Step Solution
- Step 1: Write the proportion equation
28,979,553.08 : 39,990,937.74 = 16,589,235.80 : x - Step 2: Convert to fraction form
28,979,553.08/39,990,937.74 = 16,589,235.80/x - Step 3: Cross multiply
28,979,553.08x = 39,990,937.74 × 16,589,235.80 - Step 4: Simplify right side
28,979,553.08x = 663,419,096,031,979.12 - Step 5: Solve for x
x = 663,419,096,031,979.12/28,979,553.08 - Step 6: Final answer
x = 22,892,661.39
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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.