Finding the Fourth Proportional to 22,478,037.68, 31,019,691.60 and 12,164,760.80
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Solution
The fourth proportional to 22,478,037.68, 31,019,691.60 and 12,164,760.80 is: 16,787,369.69
Step by Step Solution
- Step 1: Write the proportion equation
22,478,037.68 : 31,019,691.60 = 12,164,760.80 : x - Step 2: Convert to fraction form
22,478,037.68/31,019,691.60 = 12,164,760.80/x - Step 3: Cross multiply
22,478,037.68x = 31,019,691.60 × 12,164,760.80 - Step 4: Simplify right side
22,478,037.68x = 377,347,128,403,769.31 - Step 5: Solve for x
x = 377,347,128,403,769.31/22,478,037.68 - Step 6: Final answer
x = 16,787,369.69
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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.