Finding the Fourth Proportional to 10,641,121.80, 15,961,682.70 and 6,389,593.80
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Solution
The fourth proportional to 10,641,121.80, 15,961,682.70 and 6,389,593.80 is: 9,584,390.70
Step by Step Solution
- Step 1: Write the proportion equation
10,641,121.80 : 15,961,682.70 = 6,389,593.80 : x - Step 2: Convert to fraction form
10,641,121.80/15,961,682.70 = 6,389,593.80/x - Step 3: Cross multiply
10,641,121.80x = 15,961,682.70 × 6,389,593.80 - Step 4: Simplify right side
10,641,121.80x = 101,988,668,817,487.25 - Step 5: Solve for x
x = 101,988,668,817,487.25/10,641,121.80 - Step 6: Final answer
x = 9,584,390.70
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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.