Finding the Fourth Proportional to 22,490,215.80, 31,033,149.30 and 12,700,465.80
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Solution
The fourth proportional to 22,490,215.80, 31,033,149.30 and 12,700,465.80 is: 17,524,751.87
Step by Step Solution
- Step 1: Write the proportion equation
22,490,215.80 : 31,033,149.30 = 12,700,465.80 : x - Step 2: Convert to fraction form
22,490,215.80/31,033,149.30 = 12,700,465.80/x - Step 3: Cross multiply
22,490,215.80x = 31,033,149.30 × 12,700,465.80 - Step 4: Simplify right side
22,490,215.80x = 394,135,451,350,944 - Step 5: Solve for x
x = 394,135,451,350,944/22,490,215.80 - Step 6: Final answer
x = 17,524,751.87
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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.