Finding the Fourth Proportional to 13,440,423.20, 20,163,259.20 and 5,352,022.40
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Solution
The fourth proportional to 13,440,423.20, 20,163,259.20 and 5,352,022.40 is: 8,029,078.65
Step by Step Solution
- Step 1: Write the proportion equation
13,440,423.20 : 20,163,259.20 = 5,352,022.40 : x - Step 2: Convert to fraction form
13,440,423.20/20,163,259.20 = 5,352,022.40/x - Step 3: Cross multiply
13,440,423.20x = 20,163,259.20 × 5,352,022.40 - Step 4: Simplify right side
13,440,423.20x = 107,914,214,895,406.08 - Step 5: Solve for x
x = 107,914,214,895,406.08/13,440,423.20 - Step 6: Final answer
x = 8,029,078.65
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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.