Finding the Fourth Proportional to 19,764,621.20, 29,646,931.80 and 6,985,542.80
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Solution
The fourth proportional to 19,764,621.20, 29,646,931.80 and 6,985,542.80 is: 10,478,314.20
Step by Step Solution
- Step 1: Write the proportion equation
19,764,621.20 : 29,646,931.80 = 6,985,542.80 : x - Step 2: Convert to fraction form
19,764,621.20/29,646,931.80 = 6,985,542.80/x - Step 3: Cross multiply
19,764,621.20x = 29,646,931.80 × 6,985,542.80 - Step 4: Simplify right side
19,764,621.20x = 207,099,910,977,581.03 - Step 5: Solve for x
x = 207,099,910,977,581.03/19,764,621.20 - Step 6: Final answer
x = 10,478,314.20
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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.