Finding the Fourth Proportional to 21,915,674.18, 30,255,793.18 and 13,216,050.62
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Solution
The fourth proportional to 21,915,674.18, 30,255,793.18 and 13,216,050.62 is: 18,245,484.53
Step by Step Solution
- Step 1: Write the proportion equation
21,915,674.18 : 30,255,793.18 = 13,216,050.62 : x - Step 2: Convert to fraction form
21,915,674.18/30,255,793.18 = 13,216,050.62/x - Step 3: Cross multiply
21,915,674.18x = 30,255,793.18 × 13,216,050.62 - Step 4: Simplify right side
21,915,674.18x = 399,862,094,215,130.75 - Step 5: Solve for x
x = 399,862,094,215,130.75/21,915,674.18 - Step 6: Final answer
x = 18,245,484.53
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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.