Finding the Fourth Proportional to 20,864,720.66, 28,760,056.74 and 16,447,247.21
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Solution
The fourth proportional to 20,864,720.66, 28,760,056.74 and 16,447,247.21 is: 22,670,984.70
Step by Step Solution
- Step 1: Write the proportion equation
20,864,720.66 : 28,760,056.74 = 16,447,247.21 : x - Step 2: Convert to fraction form
20,864,720.66/28,760,056.74 = 16,447,247.21/x - Step 3: Cross multiply
20,864,720.66x = 28,760,056.74 × 16,447,247.21 - Step 4: Simplify right side
20,864,720.66x = 473,023,762,832,606.38 - Step 5: Solve for x
x = 473,023,762,832,606.38/20,864,720.66 - Step 6: Final answer
x = 22,670,984.70
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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.