Finding the Fourth Proportional to 15,121,880.80, 22,682,821.20 and 13,562,987.20
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Solution
The fourth proportional to 15,121,880.80, 22,682,821.20 and 13,562,987.20 is: 20,344,480.80
Step by Step Solution
- Step 1: Write the proportion equation
15,121,880.80 : 22,682,821.20 = 13,562,987.20 : x - Step 2: Convert to fraction form
15,121,880.80/22,682,821.20 = 13,562,987.20/x - Step 3: Cross multiply
15,121,880.80x = 22,682,821.20 × 13,562,987.20 - Step 4: Simplify right side
15,121,880.80x = 307,646,813,595,488.62 - Step 5: Solve for x
x = 307,646,813,595,488.62/15,121,880.80 - Step 6: Final answer
x = 20,344,480.80
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1.5x scale
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.