Finding the Fourth Proportional to 21,628,869.75, 29,847,869.42 and 13,480,107.75
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Solution
The fourth proportional to 21,628,869.75, 29,847,869.42 and 13,480,107.75 is: 18,602,566.87
Step by Step Solution
- Step 1: Write the proportion equation
21,628,869.75 : 29,847,869.42 = 13,480,107.75 : x - Step 2: Convert to fraction form
21,628,869.75/29,847,869.42 = 13,480,107.75/x - Step 3: Cross multiply
21,628,869.75x = 29,847,869.42 × 13,480,107.75 - Step 4: Simplify right side
21,628,869.75x = 402,352,495,822,129.44 - Step 5: Solve for x
x = 402,352,495,822,129.44/21,628,869.75 - Step 6: Final answer
x = 18,602,566.87
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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.