Finding the Fourth Proportional to 19,879,074.40, 29,818,611.60 and 8,520,671.20
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Solution
The fourth proportional to 19,879,074.40, 29,818,611.60 and 8,520,671.20 is: 12,781,006.80
Step by Step Solution
- Step 1: Write the proportion equation
19,879,074.40 : 29,818,611.60 = 8,520,671.20 : x - Step 2: Convert to fraction form
19,879,074.40/29,818,611.60 = 8,520,671.20/x - Step 3: Cross multiply
19,879,074.40x = 29,818,611.60 × 8,520,671.20 - Step 4: Simplify right side
19,879,074.40x = 254,074,585,084,105.91 - Step 5: Solve for x
x = 254,074,585,084,105.91/19,879,074.40 - Step 6: Final answer
x = 12,781,006.80
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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.