Finding the Fourth Proportional to 18,872,756.87, 28,309,209.11 and 5,742,305.48
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Solution
The fourth proportional to 18,872,756.87, 28,309,209.11 and 5,742,305.48 is: 8,613,480.67
Step by Step Solution
- Step 1: Write the proportion equation
18,872,756.87 : 28,309,209.11 = 5,742,305.48 : x - Step 2: Convert to fraction form
18,872,756.87/28,309,209.11 = 5,742,305.48/x - Step 3: Cross multiply
18,872,756.87x = 28,309,209.11 × 5,742,305.48 - Step 4: Simplify right side
18,872,756.87x = 162,560,126,436,561.34 - Step 5: Solve for x
x = 162,560,126,436,561.34/18,872,756.87 - Step 6: Final answer
x = 8,613,480.67
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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.