Finding the Fourth Proportional to 20,012,449.08, 27,626,700.78 and 13,408,408.92
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Solution
The fourth proportional to 20,012,449.08, 27,626,700.78 and 13,408,408.92 is: 18,509,983.45
Step by Step Solution
- Step 1: Write the proportion equation
20,012,449.08 : 27,626,700.78 = 13,408,408.92 : x - Step 2: Convert to fraction form
20,012,449.08/27,626,700.78 = 13,408,408.92/x - Step 3: Cross multiply
20,012,449.08x = 27,626,700.78 × 13,408,408.92 - Step 4: Simplify right side
20,012,449.08x = 370,430,101,168,723 - Step 5: Solve for x
x = 370,430,101,168,723/20,012,449.08 - Step 6: Final answer
x = 18,509,983.45
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1.5x scale
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.