Finding the Fourth Proportional to 19,994,771.70, 29,990,660.98 and 7,215,275.95
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Solution
The fourth proportional to 19,994,771.70, 29,990,660.98 and 7,215,275.95 is: 10,822,373.87
Step by Step Solution
- Step 1: Write the proportion equation
19,994,771.70 : 29,990,660.98 = 7,215,275.95 : x - Step 2: Convert to fraction form
19,994,771.70/29,990,660.98 = 7,215,275.95/x - Step 3: Cross multiply
19,994,771.70x = 29,990,660.98 × 7,215,275.95 - Step 4: Simplify right side
19,994,771.70x = 216,390,894,857,521.06 - Step 5: Solve for x
x = 216,390,894,857,521.06/19,994,771.70 - Step 6: Final answer
x = 10,822,373.87
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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.